State Route 99 21st Avenue Undercrossing “FixSac99” Project

Project Facts

Project Description

Caltrans is replacing the bridge deck on State Route 99 at 21st Avenue Undercrossing in Sacramento. Crews will also replace the sound walls, the concrete median barrier and installing brighter lighting for the 21st Avenue Undercrossing.

Need

The 21st Avenue Undercrossing was built in 1959 and widened in 1974. There is currently corrosion on the surface deck, concrete spalling, cracks, the joint seals need to be replaced, and the bridge deck has begun to deteriorate due to wear and tear from high traffic volumes, freight movement, weather and age. Caltrans is replacing the bridge deck before emergency operations are necessary.

Work Schedule/ Full Highway Closure Information

Caltrans is scheduled to close northbound and southbound State Route 99 from 47th Avenue to the U.S. Highway 50 Connector in Sacramento.

The four-day full highway closure is scheduled to begin 8:00 p.m., Friday, June 11, 2021 until 4:00 a.m., Wednesday, June 16, 2021.

Crews are also closing the mainline westbound Business 80/Capital City Freeway to southbound SR-99, and the westbound and eastbound US-50 connector ramps to southbound SR-99.

In addition, the following ramps are scheduled to be closed:

  • The on-ramp from 16th Street to eastbound US-50
  • The on-ramp from 29th Street/H Street to westbound Business 80/Capital City Freeway
  • The on-ramp from 29th Street/N Street to westbound Business 80/Capital City Freeway
  • The on-ramp from 29th Street/T Street to southbound SR-99
  • The on-ramp from Broadway to southbound SR-99
  • The off-ramp from southbound SR-99 to 12th Avenue
  • The off-ramp from northbound SR-99 to 12th Avenue
  • The on-ramp from 14th Avenue/30th Street to southbound SR-99
  • The on-ramp (slip) from Fruitridge Road to northbound SR-99
  • The on-ramp (loop) from Fruitridge Road to northbound SR-99
  • The on-ramp (slip) from East 47th Avenue to northbound SR-99
  • The on-ramp (loop) from West 47th Avenue to northbound SR-99

Alternate Routes During 4-Day Full Highway Closure

Use Interstate 5 and avoid SR-99 for the 99 hours.

Consider using these alternate routes:

Traveling north from San Joaquin County (Stockton and Lodi) to Sacramento

  • Use SR-4/Crosstown Freeway to northbound I-5 or
  • Use SR-12 to northbound I-5.

Traveling south from Sacramento to San Joaquin County

  • Use southbound I-5.

Traveling north from Lodi or Galt to Sacramento

  • Use SR-104/Twin Cities Road to northbound I-5.

Traveling north from Wilton or Elk Grove to Sacramento

  • Elk Grove Boulevard to northbound I-5 or
  • Laguna Boulevard/Bond Road to northbound I-5 or
  • Cosumnes River Boulevard/Calvin Road to northbound I-5.

Traveling south from Sacramento to Elk Grove, Wilton or Galt

  • Use southbound I-5.
Traveling north from Florin or South Sacramento to Downtown/Midtown Sacramento
  • Stockton Boulevard/Mack Road to northbound I-5 or
  • Florin Road to northbound I-5 or
  • 47th Avenue to northbound I-5.

Traveling south from westbound Business 80 (North Sacramento area or Cal Expo) towards San Joaquin County

  • Use westbound US-50 to southbound I-5.

Traveling east from Davis or West Sacramento towards San Joaquin County

  • Use eastbound US-50 to southbound I-5.

Traveling south from Airport, Natomas or westbound I-80 towards San Joaquin County

  • Use southbound I-5.

Traveling west from El Dorado, Folsom or Rancho Cordova towards San Joaquin County

  • Use westbound US-50 to southbound I-5.

Plan ahead, expect delays and consider alternative methods of transportation.

Free Light Rail Service With Flyer

Sacramento Regional Transit (SacRT) is providing free light rail service during the closure beginning June 12 through June 15. To ride light rail for free, riders must show the fare inspector a free rider flyer. For information on routes, station locations and schedules visit SacRT.

Purpose of the Full Highway Closure

The four-day full highway closure is necessary for crews to safely replace the bridge deck on SR-99 at 21st Avenue. Caltrans is taking preventative measures to fix California’s aging infrastructure, including extending the service life of this 62-year-old bridge. To avoid extensive traffic shifts and lane reductions that could last up to six months, crews are using innovative accelerated bridge construction techniques to complete the work as quickly as possible. The work is imperative to continue to provide a safe route.

Total Project Cost

$5.9 million

Funding

Entirely funded by Senate Bill 1 (SB 1), the Road Repair and Accountability Act of 2017. For complete details on SB 1, visit RebuildingCA

Project Schedule

Crews began testing the bridge pieces in April and construction to replace the bridge deck is scheduled to begin Friday, June 11, 2021.

While the project is scheduled to be completed by the fall of 2021, the bridge deck will be replaced by June 16, 2021.

Work is scheduled to begin as listed but subject to change due to traffic incidents, weather, availability of equipment and/or materials, and construction related issues.

Check out “Caltrans QuickMap” for current road conditions or download the free QuickMap app on the App Store or Google Play.  Motorists also can call the California Highway Information Network automated phone service at 1-800-427-ROAD (7623).

Accelerated Bridge Construction Method

Crews have been preparing for the upcoming bridge deck replacement project by using an accelerated bridge construction method that allows the contractor to pre-cast and inspect the girders off-site away from the construction site then haul the girders to the location of the bridge deck where crews will bind the girders together and overlay the deck. The contractor uses pre-cast components that act as both the bridge’s girder system and the bridge deck. A very similar method was used for the $14.1 million project that replaced the deteriorating Echo Summit Bridge on U.S. Highway 50 in El Dorado County during the summer of 2020.

Contractor for the Project

The project was awarded to Bridgeway Civil Constructors, Inc.

For Additional Information Contact

Nawid Nessar | Project Manager
(530) 741-5750
Nawid.Nessar@dot.ca.gov

Angela DaPrato | Public Information Officer
(916) 826-3093
angela.daprato@dot.ca.gov

Project Map

Map of Highway 99 closures centered around 21st street. Contact (916) 826-3093 or email angela.daprato@dot.ca.gov for more details.