 |
Transportation & Engineering
100 Jefferson County Pkwy, Ste. 3500
Golden, CO 80419
303-271-8495 |
Go to H & T Navigation
****JavaScript based drop down DHTML menu generated by NavStudio. (OpenCube Inc. - http://www.opencube.com)****
|
 |
Project Hall of Fame
Summary of Projects Recently Completed
| Roadway Projects |
Drainage Projects |
|
|
|
Crawford Gulch Bridge on Golden Gate Canyon Road - 2006 |
 |
Project Scope: The old bridge was rated "very low" by CDOT's bridge sufficiency rating system. It was replaced with a reinforced concrete box culvert bridge. The design allowed the existing rock abutment walls to stay in place, which reduced construction time. The new bridge includes two 12-foot lanes with four-foot shoulders, extra width for a future right-turn lane onto Crawford Gulch Road (if needed), and guardrail. |
As construction begins...
As construction is completed... |
Construction wing walls... |
McIntyre Street, State Highway 58 to Croke Canal - 2007
|
Project Scope: Increases in traffic volume warranted a larger intersection with dedicated left turn lanes and safer pedestrian crossings. Therefore, the existing two-lane street was widened to four through lanes, with left-turn lanes and acceleration/deceleration lanes, and sidewalks. A pedestrian bridge over the Croke Canal and storm sewer were included in the plans, by Muller Engineering. The $4 million project was funded by the county Road & Bridge Fund and the North Plains Impact Fees. |
Before construction... |
|
After completion of intersection...
|
After construction... |
Massey Draw Stabilization - 2007
Completed construction... |
Project Scope: During a large storm event in June 2004, Massey Draw experienced significant erosion, including parts of adjacent residential backyards. This project stabilized the channel near Massey Circle and Allison Street by constructing boulder walls, drop structures and bank stabilization.
|
| The plans, by Muller Engineering, inlcuded a 20-foot-wide channel with boulder wall sides. Drop structures, which flatten the channel slope, minimize erosion and encourage new plant growth. The $400,000 project was funded 50/50 by Urban Drainage & Flood Control District (UDFCD) and the Jefferson County General fund. |
Another view of completed project... |
Lakewood Gulch Stabilization in Welchester Tree Grant Park
| Project Scope: Over time, Lakewood gulch has eroded, posing a hazard to the safety of park users and children that pass through the park on their way to Welchester Elementary School. In some areas the banks are undercut 15 feet deep. The stream will be stabilized through a series of drop structures constructed to slow stream flows and reduce erosion. Vegetation lost during construction will be replaced with smaller stock. The $300,000 project was funded 50/50 by Urban Drainage & Flood Control District (UDFCD) and Jefferson County General Fund. |
Completed project... |
Another view of the completed project... |
Construction Schedule: Construction was completed in the summer of 2007.
Landscaping will be completed in spring 2008.
|
|
What's a Rumble Strip?
Rumble strips are grooves in asphalt pavement that are milled-in perpendicular to the direction of travel to alert inattentive drivers. As a vehicle passes over the rumble strips, noise and vibration are produced, alerting the driver they are approaching a hazard. There are two main types of rumble strips. First, ?Shoulder Rumble Strips? are placed at the outermost edge of the paved surface to warn motorists their vehicle is entering a part of the roadway not intended for routine traffic use. Second, ?Centerline Rumble Strips? are placed on the centerline of undivided highways to warn drivers they are leaving their intended lane of travel. Centerline rumble strips have been demonstrated to reduce head-on and opposing direction sideswipe crashes. In addition, drivers tend to slow down when approaching curves of winding mountain roads. |
Grinding machine at work... |
Recently, the Highways & Transportation Division completed almost 18 miles of centerline rumble strip installations on six roads in the Conifer, Evergreen and Ken Caryl area as part of the 2007 traffic safety improvements program. Surface Preparation Technologies, Inc. out of Pennsylvania was contracted to grind the rumble strip pattern using their customized equipment. Traffic delays were reduced to only a few minutes because the entire grinding operation moved at a regular walking pace. That way, traffic flaggers walking in front and behind the grinding equipment were able to safely route vehicles around the operations in controlled waves. Asphalt millings from the grinding operations will be re-used by the county Road & Bridge Division for maintenance.
The road segments that received centerline rumble strips are:
1) Ken Caryl Avenue between Valley Parkway and Valley Road;
2) Deer Creek Canyon Road between Owens Street and S. Deer Creek Road;
3) Pleasant Park Road between US 285 and Oelmann Park Road;
4) North Turkey Creek Road between US 285 and High Drive;
5) Brook Forest Road between County Road 73 and Black Mountain Drive; and
6) County Road 73 between State Highway 74 and Wonderview Avenue.
Jefferson County now has almost 40 miles of roads with centerline rumble strips. The other roads include Deer Creek Canyon Road between S. Deer Creek Road and S. Turkey Creek Road, and Golden Gate Canyon Road from the Road & Bridge Central Shop to the county line. The public reaction to the centerline rumble strips has been mostly positive. Several drivers have recounted their experiences of drifting over the centerline at night or in snowy conditions and being alerted by the noise. In other cases, bicyclists riding along the shoulder of the road appreciate the centerline rumble strips because they hear vehicles approaching from behind them.
Back to Top
Cooper Drive Reconstruction
| Project Scope: Due to the heaving soils typically found in the Ken Caryl area of Jefferson County, a segment of Cooper Drive, from West Coal Mine Drive to approximately 500 feet to the northwest, required reconstruction. Varying moisture content in clay soils caused the pavement, curb, gutter and sidewalk on Cooper Drive to heave (rise) up, creating bumpy driving/walking conditions. |
 |
To help prevent the moisture problem and future heaving, the pavement, curb, gutter, and sidewalk was removed and reconstructed with a buried perimeter edge drain system. Portions of some driveways and yards were reconstructed to tie into the new street. The project was designed and constructed by Jefferson County staff in 2007.
Bergen Parkway Pedestrian Flashers
The project consisted of the construction of pedestrian crossing improvements at the existing Buchanan Park and Buchanan Pond crossings on Bergen Parkway in Jefferson County, Colorado. Improvements consisted of the installation of solar powered, wireless, crosswalk lights and flashers; crosswalk striping; and traffic signage. The project provides for the improved safety of the students and other pedestrians to cross Bergen Parkway. This project was 100% funded with Federal funds.
Jeffco Project No. 4-71-20-3584 CDOT Project No. SRTS R100-124 (15953)
Contract Bid: $31,007.00 Final Cost: $29,479.00
Start Date: September 10, 2007 Finish Date: October 31, 2007
Back to Top
South Kipling Pkwy Sidewalk - C-470 to W. Ute Avenue
Project Scope:
|
Unlike the west side of Kipling Parkway between C-470 and West Ute Avenue, the east side of Kipling Parkway does not have a sidewalk. Construction of an 8' wide sidewalk would greatly benefit the pedestrians who have worn a path in the grass between the Jefferson Village shopping center and the Chatfield Bluffs subdivision. It would also address the citizens' concerns regarding the safety of pedestrians. The $80,000 project, designed by County staff, is funded by the Road and Bridge Fund. |
 |
Progress Update:
The Road and Bridge construction crew has completed pot-holing for utility lines. Weather permitting, the crew will grade the existing soil so the concrete sidewalk and ramps can be poured. Minor repair of the existing irrigation system will be completed as part of this project.
Project Schedule:
Construction Start: March, 2008 End: April 2008
Back to Top
Lena Gulch at Isabell Street Channel Improvements
Project Scope: In 1993, Jefferson County and Urban Drainage and Flood District (UDFCD) constructed a new culvert for Lena Gulch crossing Isabell Street. Channel improvements to connect the culvert to the improved channel in Denver West were not constructed at that time because an easement could not be obtained. Since that time, the downstream property has been sold and developed.
|
 |
|
During the development process a drainage easement for the Lena Gulch 100-year floodplain was obtained. The $440,000 project is funded equally be UDFCD and Jefferson County's General Fund.
|
|
View project plans (pdf)! |
Progress Update: The majority of the hauling has been completed. Construction continues on the boulder-lined channel and on the other channel improvements.
|
|
Project Schedule:
Design Start: May 2005 End: August 2007
Construction Start: January 2008 End: April 2008
|
Back to Top
Ken Caryl Avenue and Continental Divide Roadway Improvements
| Project Scope: Due to the expansive soils typically found in the Ken Caryl area of Jefferson County, a segment of Ken Caryl Avenue at Continental Drive Road required reconstruction. Approximately 900 feet of Ken Caryl Avenue has been reconstructed, centered at the intersection of Ken Caryl Avenue and Continental Divide Road. This project also included rotomilling, paving, and repairing curb and gutter, to various portions of Ken Caryl Avenue between Kipling Avenue and Continental Divide Road. |
 |
| The reconstructed portion of Ken Caryl Avenue was lowered to increase visibility and improve the safety of the intersection. To help prevent future heaving of the roadway, perimeter edge drains were installed with the project. The intersection of Ken Caryl and and Continental Divide also received new handicap ramps and sidewalks. This project was designed by Jefferson County staff. Construction cost was approximately $610,000 and was funded by the Road and Bridge Fund. |
| Progress Update: |
Construction Phasing Plans |
|
| |
|
|
| Project Schedule: |
|
|
| Design |
Start: August 2007 |
End: April 2008 |
| Construction |
Start: April 2008 |
End: September 2008 |
Back to Top
Belleview Avenue Widening, from Quincy Avenue to Simms Street
Scope: To raise Belleview to an arterial roadway standard, as identified in the Countywide Transportation Plan, the existing two-lane street will be widened to four through lanes. Irrigated landscaping, sidewalks, and wood fencing are included in the plans by Muller Engineering. The $15 million project is funded by the County Sales Tax Improvement District.
Looking east from the traffic circle Tree placement east of C-470
Progress Update: October - 2008
The roadway widening project has been completed along West Belleview Avenue from Quincy Avenue to South Simms Street. The County is currently having a contractor install landscaping features along the West Belleview Avenue corridor, which started in May and will continue through mid-October 2008.
The landscaping work consisted of the installation of a computerized underground irrigation system, along with trees, shrubs, and pasture lawns throughout the site. Approximately 100% of the work has been completed.
Construction Schedule (Roadway): Start: September 2006 End: October 2008
Construction Schedule (Landscaping): Start: May 2008 End: October 2008 |
Back to Top
JC 73, North Turkey Creek Road to Thimbleberry Lane
Project Scope:
Safety and capacity improvements were needed from North Turkey Creek Road to just north of the existing access to the Evergreen Professional Center. Plans were designed by Muller Engineering. American Civil Constructors constructed the project. The Evergreen/Conifer Traffic Impact Fee Fund paid for the improvements, estimated at $2.2 million. Work began in March '08 and continued through October, 2008.
JC-73 North - September 2008 Roundabout - September 2008
The project included:
 A roundabout at JC 73/North Turkey Creek Road - Roundabout Link
- The addition of four-foot paved, plus two-feet gravel shoulders in most areas
- A two-way left-turn lane from the Evergreen South Cafe to Marshmerry Lane
- A southbound left-turn lane at Marshmerry Lane
- A northbound left-turn lane into Evergreen Professional Center
- Fire station driveway improvements
- Drainage improvements
View "For Construction" plan sheets
|
|
Progress Update: February 19, 2010
The Landscape Maintenance continues with the placement of topsoil, seeding, and the installation of the erosion blankets. The maintenance includes the removal of trash, spraying of weeds, and mowing of the grass along the roadway shoulders. The drainage inlet on North Turkey Creek Road has been modified and the drainage ditches repaired after the damages from the heavy rains. The removal of sediment from the drainage ditches is now being done “as-needed”. The contractor, American Civil Constructors, is now working on punch list items identified during the one year warranty inspection and should be completed in the spring. Xcel Energy has completed the installation of the two remaining street lights at the roundabout.
Project Schedule:
Construction Start: March 2008 End: September 2008
Landscape Maintenance Start: October 2008 End: December 2010 |
Back to Top
Bowles Sidewalk between Grant Ranch and Ames Street
| Project Scope: This project included the installation of sidewalk along the south side of Bowles Avenue between Grant Ranch and Ames Street. The construction of a 5 ft. wide sidewalk will greatly benefit pedestrians since it will provide a connection between the Country Farms subdivision south of Bowles and the Villages at Raccoon Creek north of Bowles. In addition, it provides a route to Blue Heron Elementary, which is located north of Bowles within the Villages at Raccoon Creek subdivision. |
 |
Progress Update: October 22, 2008
Sidewalk and grading is complete. The pedestrian button needs to be installed at Grant Ranch and Bowles. Once that is done the project will be complete. |
| Project Schedule: |
| Design |
Start: August 2007 |
End: December 2007 |
| Construction |
Start: Summer 2008 |
End: October 2008 |
Back to Top
S. Oak Street Improvements - W. Bowles Avenue to W. Capri Avenue
| Project Scope: Alpers Farm Subdivision was platted in 2003. At that time, Continental Homes, the developer, was required to pay the County $40,000 in lieu of constructing the half-street (east side) improvements on S. Oak Street from W. Bowles Avenue to approximately W. Capri Avenue. The goal of this project is to construct curb, gutter, and sidewalk on the east side of S. Oak Street, and to add a right-turn lane at W. Bowles Avenue. |
|
| The $100,000 project, designed by County staff, is funded by the Road & Bridge Fund. | Progress Update:
Project Schedule:
| Construction |
Start: September 2008 |
End: October 2008 |
Project Manager:
| Contact Alecia Cope with Jefferson County at 303-271-8495 or acope@jeffco.us if you have questions or concerns. |
Back to Top
Indiana Street Over Croke Canal
|
The existing Indiana Street Bridge over the Croke Canal just north of 55th Drive was given a very low bridge sufficiency rating under the Colorado Department of Transportation (CDOT) scoring system. As a result this bridge will be replaced with a reinforced concrete box culvert.
This project qualified for federal funding under the TEA-21 Act of the Federal Highway Administration (FHWA). Up to 80% of funds used for design, right-of-way, and construction can be reimbursed to Jefferson County.
Indiana Street at Croke Canal - During pre-construction - Looking north and northeast
Indiana Street at Croke Canal - Post-Construction - Looking north and northeast
Progress Update: November 14, 2008
Bridge construction on Indiana Street over Croke Canal has been completed. Indiana Street between West 52nd Avenue and West 58th Avenue was opened to through traffic at noon on October 31, 2008.
The general contractor, KECI Colorado, Inc., completed the project approximately two months ahead of schedule. The newly constructed bridge was designed to be much safer for pedestrians, bicyclists, equestrian riders, and motorists. The traffic lanes are twelve feet in width, and there are now four foot wide paved shoulders on each side of the bridge.
In addition, there is new curb, gutter, and sidewalk as well as new "weathering steel" guardrails and bridge rail. Jefferson County Division of Highways and Transportation would like to thank the area residents and businesses and the traveling public for their cooperation and patience during construction of the new bridge.
Project Schedule:
| Construction: Start: September 2, 2008 End: December 31, 2008 |
Project Manager:
| Contact Gary Campbell with Jefferson County at 303-271-8495 or gcampbel@jeffco.us if you have questions or concerns. |
Back to Top
2008 Traffic Signal Project
|
Coal Mine Drive and Coal Mine Avenue - A new traffic signal is scheduled to be constructed at the intersection of Coal Mine Avenue and Coal Mine Drive. This location is at the main student parking lot for Dakota Ridge High School. This traffic signal will cost $92,000 to install and construction will be completed by the beginning of September 2008. Once installed, it will provide easier ingress to and egress from the Dakota Ridge High School student parking lot and the Dakota Ridge Apartments on the south side of Coal Mine Avenue.
Project Schedule: Completion: October 15, 2008
Contractor: Integrated Electric, Inc. - Contact - Tim Carpenter - 303.733.2028 |
Back to Top
Jefferson County Fairgrounds Drainageway "G" of Lena Gulch, Phase II
| Purpose & Need: |
|
This project is to provide for the continuation of improvements within the Fairgrounds to reduce the downstream flooding caused by runoff flowing from Green Mountain. During major rain storms, there is significant flooding of the 6th Avenue Frontage Road, Indiana Street and other properties between 6th Avenue and Colfax Avenue.
|
 |
 |
 |
 |
|
Jefferson County Fairgrounds - Drainage Way "G" of Lena Gulch
August 2009
|
| Project Scope: |
| This project will design a regional detention pond to reduce peak runoff rates downstream of the Fairgrounds. It is anticipated that drainage improvements for this project will cost in excess of $1,200,000. Design and construction costs will be shared equally between Jefferson County and Urban Drainage & Flood Control District (UDFCD). |
|
Picture of the Jefferson County Fairgrounds Site Plan (pdf) |
|
Updated aerial picture of the Fairgrounds (pdf) |
| Project Update: August 19, 2009 |
| The new drainageway system and the off-line detention basin were completed in June. A separate contract for landscaping was also completed in late July. The Jefferson County Division of Highways and Transportation and the Urban Drainage and Flood Control District would like to thank everyone for their cooperation during construction. |
| Project Schedule: |
| Construction Started: November 2008 End: August 2009 |
| Project Manager: |
| Contact Mark Winnen with Jefferson County at 303-271-8483 or mwinnen@jeffco.us if you have questions or concerns. |
|
Jefferson County Government Center Roadway Improvements |
|
Purpose and Need:
Work continues on the Jefferson County Government Center Roadway Improvements Project. As the Regional Transportation District (RTD) advances toward Golden on the new West Corridor light rail extension project, Jefferson County is building a new roadway extension to Johnson Road to accommodate the increased traffic. By early 2013 the West Corridor light rail system, parking structure and train station will be open to the public. The new facility will be located just south of the Jefferson County Courts and Administration Building. (Link to RTD's West Corridor web site at http://www.rtd-fastracks.com/wc_1.)
During the remainder of 2009, Jefferson County Parkway will be connected to Johnson Road by a new roadway segment near the south side of the County Jail. This will allow employees and visitors a second access point to Johnson Road. The current access from Johnson Road through the roundabout will remain open. The Jefferson County Highways & Transportation Division will manage the roadway connection project. |
|
 |
|
Milling Process |
 |
|
Jefferson County Parkway - Final Paving |
|
Project Scope: |
|
Jefferson County and the City of Golden teamed up to prepare the roadway design in 2008. Both agencies will provide inspection and construction project management. The improvements will include construction of a new roadway segment from Jefferson County Parkway to Johnson Road. The road will have raised concrete medians, sidewalks, storm sewer, and two water quality ponds. Portions of Johnson Road will have to be raised approximately three feet to complete the intersection grades. The intersection will eventually be controlled by a traffic signal. Some landscape work will be re-installed in 2009 and future plans call for added trees and shrubs in the connection road medians.
The project has been awarded to Concrete Express, Inc. for $1.28 million. Jefferson County and the City of Golden will split the project costs on a 50/50 basis. Work is anticipated to begin after April 6, 2009 and finish in early September 2009. |
|
Project Update: |
|
Jefferson County Parkway
Since July, crews have installed new driveways at the delivery entrance and ballot drop off area, which are both now open. All sidewalks on the project have been poured and are open for use. RTD's bus stop has been moved back to the original shelter area. Crews have finished the last stages of asphalt milling and paving. They are currently installing trees and shrubs in the concrete medians, placing topsoil and seeding.
Final signing and roadway striping will be installed during the week of August 24th. As the project wraps up, additional street lighting will be installed and new traffic signals will be placed at the intersection of Johnson Road / Jefferson County Parkway. This new intersection will be STOP sign controlled until traffic volumes increase to warrant the signal operation.
FasTracks Light Rail Station - Denver Transit Construction Group (DTCG) crews began soil excavation behind the courthouse overflow parking lots and are transferring the material to a new parking lot across from the Sheriff's Office at Weimer Street. Work is expected to continue for about one month. The concrete trail by West 6th Avenue and an interior trail at Weimer Street will be temporarily closed to pedestrian and bicycle traffic until the construction is finished.
|
| Project Schedule: |
| Week of April 6, 2009 |
Start Roadway Construction |
|
| April 16-June 15, 2009 |
Phase I Construction |
Johnson Road Closure |
| June 16 - Early September, 2009 |
Phase II Construction |
Jefferson County Parkway Partial Closure |
| September 2009 |
Finish Roadway Construction |
|
|
Project Manager: Contact John Suess at Jefferson County at (303) 271-8495 or jsuess@jeffco.us if you have questions or concerns. |
For More Information:
See the full press release for more information. |
Back to Top
NEAT Meadow Trail
| Purpose and Need: |
|
This project will construct an approximately half-mile long paved trail to complete the North Evergreen Activity Trails (NEAT) Meadow Trail which is the first piece of a larger NEAT Trail System that will connect local subdivisions, three public schools, the Buchanan Recreation Area, the Evergreen Fire & Rescue Department, and six shopping areas. NEAT is a trail system designed to provide safety, access, recreation and fitness throughout the community.
Before After (October 12, 2009)
 
The purpose of the NEAT Meadow Trail is to provide trail access and fill in trail gaps between existing trail segments, and to provide a safe continuous trail between Evergreen Middle School and Broadmoor Drive. The trail will be constructed on property owned by the county, schools, a neighborhood homeowners' association, and a couple of private property owners.
Before After (July 28, 2009)
 
Trail planning was completed by the Highways & Transportation Division staff and the NEAT board and steering committee, with input from the Colorado Division of Wildlife's Wildlife District Manager, a Jefferson County (Jeffco) Environmental Specialist, Jeffco Historical Liaison, and a Safe Routes to School Coordinator.
|
Project Scope:
|
|
The trail will be a 6'-wide concrete trail with a maximum slope of 8%. It will incorporate a minor rock wall, culverts, ADA-compliant curb and gutter, re-seeding of disturbed areas, and erosion control measures. Trail design standards used include those from the American Association of State Highway and Transportation Official's (AASHTO) Guide for the Development of Bicycle Facilities, the Federal Highway Administration's Bicycle Lanes Versus Wide Curb Lanes, Traffic Controls for Bicycle Facilities, and AASHTO's Policy on Geometric Design.
The Road & Bridge Division will be constructing the trail. Funds for this project include a $200,000 grant awarded in April 2008 from Great Outdoors Colorado and donations to NEAT.
|
Project Update:
|
The Road & Bridge Division has completed the major construction tasks, including pouring the concrete trail, on the Bergen Pkwy portion of the project. Tasks remaining include: resetting the dowel fence, completing top soil placement, seeding the disturbed area, crimping & mulching or laying erosion control blanket on the seeded area, and maintaining the erosion control measures until the disturbed area has been revegetated to 70% of the original condition.
|
| Project Schedule: |
| October 2009 Trail construction complete |
| |
| Project Manager: |
| Contact Alecia Cope at Jefferson County at (303)271-8456 or acope@jeffco.us if you have any questions or concerns. |
Back to Top
Last Modified: Feb 19, 2010 12:56 PM
|
|
|
 |
|
