September 12, 2026 11:59 AM

Expect Delays on Highway 138 for an Emergency Project Starts on Wednesday

HESPERIA, CA. (Pain In The Pass) >> The California Department of Transportation (Caltrans) announces the start of an emergency project to install a drainage system along State Route Highway 138 (SR-138) between Interstate 15 Freeway and Summit Valley Road just west of Summit Office Road approximately 0.3 miles section of the highway. (see map below)

This emergency project is critical to preventing water from crossing the highway during heavy rainfall and flooding events. By installing an improved drainage system, the project will enhance roadway safety, protect the traveling public, and help maintain traffic flow during severe weather conditions.

The closure locations will happen near Summit Office Rd. and will take place with a 24/7 reversible lane closures (they will install one-way traffic signal) so expect traffic delays at times.

Please use caution and remember to reduce your speed when approaching and driving through the construction zones. Schedules are subject to change due to inclement weather or construction issues.

The project is expected to be complete at the end of 2025.

There are more ways to follow the Pain In The Pass. Join the Traffic Group on Facebook with over 165,000 members. Join the group on MeWe. Like us on the NEW page on Facebook. Follow us on Instagram, and also follow us on Threads, and X aka Twitter.

loader-image
Cajon Pass
11:59 am, Sep 12, 2026
temperature icon 86°F
clear sky
Humidity: 26 %
Pressure: 1013 mb
Wind: 12 mph
Wind Gust: 12 mph
Clouds: 8%
Visibility: 10 km
Sunrise: 6:30 am
Sunset: 7:01 pm
  • Temperature
  • Precipitation
  • Rain Chance
  • Wind
  • Humidity
  • Pressure
2:00 pm
temperature icon
82°/85°°F 0 mm 0% 12 mph 29% 1013 mb 0 mm/h
5:00 pm
temperature icon
80°/82°°F 0 mm 0% 14 mph 28% 1011 mb 0 mm/h
8:00 pm
temperature icon
70°/70°°F 0 mm 0% 11 mph 48% 1012 mb 0 mm/h
11:00 pm
temperature icon
65°/65°°F 0 mm 0% 6 mph 56% 1013 mb 0 mm/h
2:00 am
temperature icon
63°/63°°F 0 mm 0% 5 mph 57% 1013 mb 0 mm/h
5:00 am
temperature icon
60°/60°°F 0 mm 0% 3 mph 56% 1012 mb 0 mm/h
8:00 am
temperature icon
66°/66°°F 0 mm 0% 3 mph 48% 1013 mb 0 mm/h
11:00 am
temperature icon
77°/77°°F 0 mm 0% 7 mph 20% 1012 mb 0 mm/h