Structure 54 1206R · San Bernardino County, CA

Interstate 15 NB over Valley Wells Ditch

Carries Interstate 15 NB over Valley Wells Ditch, 08-sbd-015-161.50.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
CAR · 15 FT43 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 7/9

43 ft end to end, longest span 21 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.

Built200323 years old
Length42.7 ft13 m
Daily traffic18,500counted 2020
Last inspectedFebruary 2024every 24 months

Location

StateCalifornia
CountySan Bernardino
Location08-sbd-015-161.50
CarriesInterstate 15 NB
CrossesValley Wells Ditch
Coordinates35.43656, -115.69482

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length42.7 ft (13 m)
Max Span21.3 ft (6.5 m)
Deck Width58.4 ft (17.8 m)
Deck Area231.4 sq m
Main Spans2
Year Built2003

Traffic

Avg Daily Traffic18,500 (2020)
Truck Traffic20%
Lanes On Bridge3

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number54 1206R

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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