PLACER/NEVADA COUNTIES — Motorists in the Sierra foothills face a heavy week of overlapping construction closures starting Sunday, with Caltrans District 3 warning that cumulative delays on Interstate 80 alone could reach up to two hours depending on traffic volumes. Separate projects are also closing lanes and ramps on State Route 20 and State Route 49 through July 24, according to two advisories the district issued July 17.

Caltrans is urging drivers to build in extra travel time along the I-80 Sierra corridor and to check QuickMap (quickmap.dot.ca.gov) for real-time conditions before heading out.

Interstate 80

Eastbound:

  • Blue Canyon Pavement Rehabilitation Project, between Applegate and Weimar: lane and ramp closures 8 p.m. to 6 a.m. nightly, Sunday, July 19 through Thursday, July 23; work wraps for the week at 6 a.m. Friday, July 24.
  • Alta Pavement Improvement Project: closures at Cape Horn from 8:30 p.m. Wednesday, July 22 to 8 a.m. Thursday, July 23, and at Magra from 5 a.m. to 6 p.m. Wednesday, July 22.
  • Alta Pavement Improvement and Monte Vista Pavement Rehabilitation projects, between Gold Run and Alta: round-the-clock lane and ramp closures from 6 a.m. Monday, July 20 to noon Thursday, July 23.
  • Monte Vista Pavement Rehabilitation Project: Crystal Springs on- and off-ramps closed until further notice (detour east to Baxter, then west on I-80 back to Crystal Springs); Drum Forebay on- and off-ramps also closed until further notice (detour east to the next exit, then west on I-80 back to Drum Forebay).
  • Blue Canyon Pavement Rehabilitation Project, between the Whitmore Maintenance Station and Emigrant Gap: lane closures 8 p.m. to 6 a.m. nightly, Sunday, July 19 through Thursday, July 23, wrapping 6 a.m. Friday, July 24. Blue Canyon Road itself is closed from 10 p.m. Sunday, July 19 to noon Friday, July 24.
  • Yuba Pass Separation Overhead Bridge Project: eastbound I-80 off-ramp to SR 20 closed from 6 p.m. Sunday, July 19 to 9 a.m. Thursday, July 23 (detour east to Eagle Lakes Road, then back west on I-80 to the SR 20 off-ramp).
  • Drum Forebay Drainage Restoration Project, at Rainbow: lane closures 7 a.m. to 7 p.m., Monday, July 20 through Wednesday, July 22.
  • Soda Springs Pavement Rehabilitation Project, between Troy and Soda Springs: round-the-clock lane closures starting 6 a.m. Monday, July 20 through noon Friday, July 24.
Yuba Pass Separation Overhead Bridge Project, looking westbound along I-80 where crews are building new bridge at the junction with State Route 20.
Yuba Pass Separation Overhead Bridge Project, looking westbound along I-80 where crews are building new bridge at the junction with State Route 20.

Westbound:

  • Emergency Culvert/Rockfall Project, between Floriston and Hinton Road: lane closures 7:30 a.m. to 5 p.m., Monday, July 20 and Tuesday, July 21.
  • Drum Forebay Drainage Restoration Project, between Troy and Big Bend: lane closures 7 a.m. to 7 p.m., Tuesday, July 21 through Thursday, July 23.
  • Yuba Pass Separation Overhead Bridge Project: westbound off-ramp at Yuba Gap closed until further notice due to an active crossover (detour west to Emigrant Gap, then back east on I-80 to Yuba Gap).
  • Blue Canyon Pavement Rehabilitation Project, between Emigrant Gap and the Whitmore Maintenance Station: lane closures 9 p.m. to 6 a.m. nightly, Sunday, July 19 through Thursday, July 23, wrapping 6 a.m. Friday, July 24.
  • Monte Vista Pavement Rehabilitation and Alta Pavement Improvement projects, between Alta and Gold Run: round-the-clock lane and ramp closures from 3 p.m. Monday, July 20 to 9 a.m. Friday, July 24.
  • Blue Canyon Pavement Rehabilitation Project, between Weimar and Applegate: lane closures 9 p.m. to 6 a.m. nightly, Sunday, July 19 through Thursday, July 23, wrapping 6 a.m. Friday, July 24.

State Route 20

Hwy 20 pavement rehab
  • Pavement Rehabilitation Project: one-way traffic control between Omega Road and Bear Valley around the clock from 7 p.m. Sunday, July 19 through 6 p.m. Thursday, July 23; between Harmony Ridge Road and Pine Flat Way from 6 p.m. Thursday, July 23 to noon Friday, July 24.
  • Yuba Pass Separation Overhead Bridge Project: eastbound SR 20 closed between the Omega Scenic Overlook and the I-80 junction from 6 p.m. Sunday, July 19 to 9 a.m. Thursday, July 23. Motorists heading to I-80 must detour south on SR 49 to Auburn or south on SR 174 to Colfax; large trucks are directed to use SR 49 only. The SR 20 on-ramp to westbound I-80 remains closed until further notice for bridge construction.

State Route 49

  • Corridor Improvement Project, between McKnight Way and La Barr Meadows/Allison Ranch Road: one-way traffic control 8 p.m. to 6 a.m. Sunday, July 19 into Monday, July 20, then 9 p.m. to 6 a.m. nightly through Thursday, July 23, wrapping 6 a.m. Friday, July 24.
  • Sidewalk Gap Closure Project, northbound between Education Street and Dry Creek Road: lane closures 6 p.m. to 7 a.m. nightly, Sunday, July 19 through Thursday, July 23, wrapping 7 a.m. Friday, July 24.

Caltrans said the extended, multi-night closures are designed to shorten the overall length of each project and improve safety for work crews, and that schedules could shift because of weather, material availability or other unexpected events.

Caltrans District 3 maintains 4,385 lane miles across 11 Sacramento Valley and Northern Sierra counties. The district posts construction and road-condition updates on X at @CaltransDist3 and on Facebook at CaltransDistrict3, and encourages motorists to “Be Work Zone Alert” and slow down in construction zones. Real-time conditions are available at quickmap.dot.ca.gov or through the QuickMap app.