Current Projects

For reports relating to current projects, please visit the Reports section of the website.
  See descriptions of current projects below.


SR 89 Mousehole Truckee
SR 89 is a major artery for vehicles traveling from I-80 to Lake Tahoe and several major recreation facilities in the area. The current Union Pacific Railroad underpass structure on SR 89 in Truckee, known locally as the "Mousehole," has long been the subject of discussion regarding its inadequacies. The structure was completed in 1928 by the U.S. Bureau of Public Roads. It has become a focal point for traffic congestion and needs improvements to provide safe pedestrian and bicycle access. Pedestrians who use the route to access shopping nearby have been observed running through the Mousehole to avoid conflict with cars. Others climb up and over the 25-foot-high railroad embankment rather than risk walking through the underpass. 

Pedestrian walking through Mousehole vehicle tunnel

The Town of Truckee (as lead agency), Caltrans, and the Nevada County Transportation Commission are providing funding to develop a project to improve traffic flow and safety at the Mousehole. Caltrans assembled a Project Development Team for this project, and after looking at several alternatives, it was determined that due to the high cost of widening the existing vehicle tunnel or adding a new tunnel, the scope of work was then focused on constructing a Pedestrian/Bicycle Undercrossing Tunnel on the east side of SR 89 between West River Street and Deerfield Drive. A 12-foot-wide by 10-foot-high concrete tunnel for pedestrian and bicycle use is being constructed beneath the Union Pacific Railroad tracks east of the existing vehicle tunnel.  In order to construct the project, Caltrans provided $4.4 million from the State Highway Operation and Protection Program (SHOPP) and $570,000 of toll credits to be used for federal matching purposes.  NCTC programmed and the California Transportation Commission approved an allocation on June 25, 2014 for $3.132 million in State Transportation Improvement Program (STIP) funds.  Truckee is providing $350,000 from its traffic impact fee fund.  Based on current estimates, project construction was underfunded by $1.5 million, so Truckee submitted an application for a federal grant from the TIGER 2013 program in that amount and was awarded the amount needed.  The funds were obligated on June 27, 2014.  The Town received authorization to proceed with construction on June 30, 2014 and the project went out to bid in August.  The Town awarded the construction contract to Gordon N. Ball, Inc. on September 23, 2014 in the amount of $7,870,230 with a contingency budget of 10% or $787,000. 

Construction began on the pedestrian/bicycle tunnel after the April 2, 2015 groundbreaking ceremony.  When you click on the live camera link below you can see the progress from the beginning of construction to the current day's work.  The September 2015 Update Report shown below describes some of the construction activities and pictures the ground freezing system and construction phases of the tunnel before it was jacked through the embankment.   Minutes from the July 15, 2015 NCTC Special Meeting below detail the tour given to NCTC Commissioners of the pedestrian tunnel construction site. 

Updated 5/10/16

Click here to view Mousehole Alternative 1 (
the pedestrian/bicycle tunnel alternative)
SR 89 Mousehole Construction - Live Camera
May 2016 Update on the Mousehole Pedestrian Tunnel Project
September 2015 Update Report with descriptions of construction activities and ground freezing pictures
Minutes of July 15, 2015 NCTC Special Meeting - Tour of the Pedestrian Tunnel Construction Site

   Click to select an picture...      Click to select an picture...
         Looking out from pedestrian tunnel on 9-14-15                      Pedestrian tunnel construction site on 10-1-15

Truckee River Legacy Trail
The Truckee River Legacy Trial is a series of planned trails that locals and tourists alike enjoy year-round.  The Town of Truckee adopted a Trails and Bikeways Master Plan, which provides detailed guidelines for the development of over 130 miles within the Town.  The Truckee River Legacy Trail is a high priority trail.  When complete, this trail will connect the Donner Memorial State Park to the Glenshire neighborhood.  The majority of the route will parallel the Truckee River.  Phase 1 and 2 of the Truckee River Legacy Trail was completed in the summer of 2009 and Phase 3A was completed in 2010.  Phase 3B opened on August 8, 2014 (see invitation below to the opening ceremony).  Phase 4 and 5 are segments to be completed in the future.  For more details, click on the Truckee River Legacy Trail link below.

Truckee River Legacy Trail
Invitation to the Ribbon Cutting Ceremony Opening Phase 3B of the Trail -- August 8, 2014, 4:00 p.m.
Time Lapse Video of the Bridge Being Installed Over Martis Creek -- A crane was used to put the bridge together and to set it in place.  The crane required 220,000 lbs. of counterweight, which you will see being placed on the crane in the beginning of the video.  The bridge was set on June 16, 2014.

Truckee-Capital Preventive Maintenance (CAPM)
This project proposes to preserve the pavement on SR 89 in Nevada County from PM 1.2, just north of I-80, to the Sierra County line.  It will preserve the existing pavement by Cold-in-Place recycling followed by HMA overlay.  New striping and replacement of existing guardrail will also take place.  This project was programmed in the 2012 SHOPP for $6,185,000 including Engineering, Environmental, Right-of-Way, and Construction.  Bids opened on 10/23/14, and the construction contract was awarded to Granite Construction for $3,966,966.  Construction work started on 7/7/15 and was completed in November.

Nevada County

Brunswick Road/Loma Rica Drive Intersection Improvement Project
Brunswick Road links SR 49 in the Brunswick Basin to SR 174 and is one of the most heavily traveled county-maintained roadways with 15,300 Average Daily Trips (ADT).  Loma Rica Drive links Brunswick Road to Loma Rica Industrial Park and the Nevada County Airport and it has 6,500 ADT.  There were 42 collisions reported between 2000 and 2015, which is the highest collision rate for any county controlled intersection.  The public perceives most collisions to be weather related, but only 10 of the 42 occurred between November and March, while 11 collisions occurred in the month of June.  The project ranks as the highest remaining undelivered priority in the Regional Traffic Mitigation Fee (RTMF) Capital Improvement Program for future improvement.  A Feasibility Study conducted in 2013 by Kimley-Horn and Associates resulted in the preferred option to install a traffic signal, widen the intersection, install specialized pavement treatments and drainage improvements, and ITS designs to improve intersection operations and safety.  The county has approved the project at a bid price of $935,293.12 to Koch & Koch, Inc.  Construction began in May 2015 was completed in 45 working days.  Read Joshua Pack's full report to get all details of the project.

     Brunswick/Loma Rica Intersection Project Memo - May 2015 by Joshua Pack, Principal Civil Engineer, Nevada County Department of Public Works

Projects updated after September 2015 NCTC meeting:
Operational Improvements at Brewer Road and SR 49
This project will construct a right-turn pocket lane on northbound SR 49 to reduce congestion, potential rear-end collisions, and improve sight distance for northbound traffic.  It is located approximately 10 miles south of Grass Valley at the SR 49/Brewer Road intersection.  The project is funded from the SHOPP Minor A Program and preliminary design and environmental work started in July 2014 with the Caltrans Design and Environmental units and is scheduled for completion in fall 2014.  It was advertised on December 22, 2014 and awarded on February 10, 2015 to America Pacific Construction for $174,426.  Construction work started on July 20, 2015 and is estimated to be completed by late September.  Construction capital = $400,000.

Operational Improvements at Smith Road and SR 49
This project will construct a right-turn pocket lane on southbound SR 49 with a standard public road approach that is tapered with 4 foot shoulders.  Funding is from the SHOPP Minor B Program.  Design and Environmental studies will continue in FY 2015/16, and construction is planned to begin in summer 2016.  Construction Capital = $280,000.

Safety Improvement on SR 174 Expanded from Maple Way to You Bet Road
This project proposes to realign two curves, widen shoulders, add a left turn lane at Greenhorn Access Road, and improve the clear recovery zone between Maple Way and You Bet Road on SR 174 in Nevada County.  The purpose of this project is to improve safety and operations for all users, including bicyclists and pedestrians.  It will help reduce the number and severity of collisions on the existing highway.  The project was amended into the 2014 SHOPP in September 2014, at a total cost of $12,080,000, including Engineering, Environmental, Right-of-Way, and Construction.  Preliminary Engineering work has begun and construction is planned to start in FY 2018/19.  Re-evaluation of accidents within the vicinity of this project confirmed the existence of collision patterns to justify increasing the project limits.  A Project Change Request was approved to increase the project limits to Post Miles 2.7 to 4.6 with a new total cost of $28,456,000.  An Open House was conducted by Caltrans on May 7th at the Peardale Fire Station to share information with the public about the project. 

Widen SR 49 North of La Barr Meadows Project and Just Before McKnight Way Interchange
This project proposes to widen SR 49 to a four-lane conventional access control highway with a continuous median/left-turn lane, and 8-foot shoulders to improve traffic operations and safety.  The project is located south of Grass Valley in Nevada County, between PM 11.2, the north end of SR 49/La Barr Meadows project, and PM 13.3, near the McKnight Way interchange.  The project is programmed in the State Transportation Improvement Program (STIP) from the Regional Improvement Program (RIP).  The Project Approval & Environmental Documentation (PA&ED) phase is programmed for $3 million and the Plans, Specifications, and Estimates (PS&E) phase is also programmed for $3 million.  Preliminary Engineering and Environmental work is taking place, as well as field surveys within the R/W limits.  An Open House was held on August 5, 2015 at Grass Valley City Hall to present project information and project concept options to the public.  Results from the meeting showed Option #4, 22-ft. wide median freeway with median barrier and frontage roads, as the one the public favored most.

Hot Mix Asphalt Overlay on SR 49 to the Yuba County Line
The project proposes to preserve and extend the life of the existing pavement and improve ride quality.  The project limits extend from 1.2 miles north of the South Yuba River Bridge on SR 49 to the Yuba County line (approximately 9.4 miles).  Plans propose to Cold-in-Place Recycle (CIR) the existing pavement and the placement of a new Hot Mix Asphalt (HMA) overlay.  All new HMA surfaces will also receive new striping.  The project was amended into the 2014 SHOPP on 11/7/14 for a total cost of $7,579,000, including Engineering, Environmental, Right-of-Way, and Construction.  Preliminary Engineering work has started, with Construction scheduled to begin during the summer of 2017.

Rubberized HMA-Open Graded Overlay on SR 49 from the County Line at Bear River Bridge to Separation of SR 20 in Grass Valley
The project proposes to place 0.10-foot rubberized HMA-open graded overlay on SR 49 from the county line at the Bear River Bridge, to the SR 20 separation in Grass Valley.  The project will skip over the recently completed La Barr Meadows project limits.  There will also be HMA-Dike replacement, and Metal Beam Guard Rail work at certain locations to maintain hydraulic and safety standards.  New striping will be placed on all overlay areas.  The project is funded from the Major Maintenance (HM124) program.  Bids opened on 4/23/15, and the project was awarded to Teichert Construction for $3,998,277.  Construction work started on 6/26/15, and is estimated to be completed by late September.

Nevada City

No projects at this time