Structure 54 0548R · San Bernardino County, CA

Interstate 15 NB over Mojave River

Carries Interstate 15 NB over Mojave River, 08-sbd-015-75.31-bsw.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,006 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

1,006 ft end to end, longest span 77 ft: about 2.8 football fields. 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 tee-beam bridge.

Built1961rebuilt 2000
Length1005.9 ft306.6 m
Daily traffic24,500counted 2022
Last inspectedJune 2024every 24 months

Location

StateCalifornia
CountySan Bernardino
Location08-sbd-015-75.31-bsw
CarriesInterstate 15 NB
CrossesMojave River
Coordinates34.89520, -116.99562

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length1005.9 ft (306.6 m)
Max Span77.1 ft (23.5 m)
Deck Width42.3 ft (12.9 m)
Deck Area3955.1 sq m
Main Spans13
Year Built1961 (reconstructed 2000)

Traffic

Avg Daily Traffic24,500 (2022)
Truck Traffic17%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number54 0548R

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.

Nearby Bridges