US Bridges

Rock Springs Road over Mojave River

Poor

San Bernardino County, California · .9 MI E Arrowhead Lk RD · Structure no. 54C0670

Built
2005
20 years old
Condition
Poor
inspected September 2023
Type
Culvert
Concrete
Length
45 ft
3 main spans
Daily traffic
12,780
2016 count
Owner
County
County Highway Agency

About this bridge

Rock Springs Road over Mojave River is a concrete culvert carrying Rock Springs Road over Mojave River in San Bernardino County, California. It was built in 2005, so it is 20 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 12,780 vehicles a day, roughly 3% of them trucks, projected to reach 18,258 by 2042. The structure is 45 ft (13.6 m) long and 43 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

Location

Open in Google Maps
CarriesRock Springs Road
CrossesMojave River
Location.9 MI E Arrowhead Lk RD
RouteCounty Highway 0
CountySan Bernardino County
StateCalifornia
Coordinates34.41362, -117.23361
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length45 ft (13.6 m)
Longest span14 ft (4.3 m)
Deck width43 ft (13 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,780 (2016)
Projected traffic18,258 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed12.4 mi (20 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$297,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Rock Springs Road over Mojave River built?

It was built in 2005, making it 20 years old in 2025.

What condition is Rock Springs Road over Mojave River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2023.

How much traffic does Rock Springs Road over Mojave River carry?

About 12,780 vehicles per day (2016 count), of which roughly 3% are trucks.

How long is Rock Springs Road over Mojave River?

The structure is 45 ft (13.6 m) long with a longest span of 14 ft (4.3 m) and a deck 43 ft wide.

Who owns Rock Springs Road over Mojave River?

It is owned by the County Highway Agency.