US Bridges

Daggett-Yermo RD over Mojave River

Fair

San Bernardino County, California · 0.5 MI N of Natl Tra HWY · Structure no. 54C0026

Built
1941
84 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete Continuous
Length
215 ft
11 main spans
Daily traffic
2,919
2015 count
Owner
County
County Highway Agency

About this bridge

Daggett-Yermo RD over Mojave River is a concrete continuous slab carrying Daggett-Yermo RD over Mojave River in San Bernardino County, California. It was built in 1941, so it is 84 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 2,919 vehicles a day, roughly 15% of them trucks, projected to reach 3,795 by 2045. The structure is 215 ft (65.5 m) long and 27 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesDaggett-Yermo RD
CrossesMojave River
Location0.5 MI N of Natl Tra HWY
RouteCounty Highway 0
CountySan Bernardino County
StateCalifornia
Coordinates34.86964, -116.88767
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating17.9 US tons
Inventory rating13.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans11
Design loadUnknown
Structure length215 ft (65.5 m)
Longest span22 ft (6.7 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,919 (2015)
Projected traffic3,795 by 2045
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Daggett-Yermo RD over Mojave River built?

It was built in 1941, making it 84 years old in 2025.

What condition is Daggett-Yermo RD over Mojave River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2024.

How much traffic does Daggett-Yermo RD over Mojave River carry?

About 2,919 vehicles per day (2015 count), of which roughly 15% are trucks.

How long is Daggett-Yermo RD over Mojave River?

The structure is 215 ft (65.5 m) long with a longest span of 22 ft (6.7 m) and a deck 27 ft wide.

Who owns Daggett-Yermo RD over Mojave River?

It is owned by the County Highway Agency.