Structure 54C0026 · San Bernardino County, CA

Daggett-yermo RD over Mojave River

Carries Daggett-yermo RD over Mojave River, 0.5 Mi N Of Natl Tra HWY.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT215 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

215 ft end to end, longest span 22 ft: about 3 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a slab bridge.

Built194185 years old
Length214.9 ft65.5 m
Daily traffic2,919counted 2015
Last inspectedNovember 2024every 24 months

Location

StateCalifornia
CountySan Bernardino
Location0.5 Mi N Of Natl Tra HWY
CarriesDaggett-yermo RD
CrossesMojave River
Coordinates34.86964, -116.88767

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length214.9 ft (65.5 m)
Max Span22.0 ft (6.7 m)
Deck Width26.9 ft (8.2 m)
Deck Area537.1 sq m
Main Spans11
Year Built1941

Traffic

Avg Daily Traffic2,919 (2015)
Truck Traffic15%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number54C0026

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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