Structure 54 0251L · San Bernardino County, CA

Interstate 15 SB over Opah Ditch

Carries Interstate 15 SB over Opah Ditch, 08-sbd-015-r126.86.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT80 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

80 ft end to end, longest span 20 ft. Lengths and the car 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.

Built196561 years old
Length79.7 ft24.3 m
Daily traffic22,000counted 2021
Last inspectedNovember 2023every 24 months

Location

StateCalifornia
CountySan Bernardino
Location08-sbd-015-r126.86
CarriesInterstate 15 SB
CrossesOpah Ditch
Coordinates35.16479, -116.18310

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length79.7 ft (24.3 m)
Max Span20.0 ft (6.1 m)
Deck Width41.0 ft (12.5 m)
Deck Area303.8 sq m
Main Spans4
Year Built1965

Traffic

Avg Daily Traffic22,000 (2021)
Truck Traffic20%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number54 0251L

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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