Structure 56 0261L · Riverside County, CA

Interstate 15 SB over Empire Creek

Carries Interstate 15 SB over Empire Creek, 08-riv-015-5.41-tmca.

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 FT52 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

52 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.

Built1949rebuilt 1976
Length52.5 ft16 m
Daily traffic163,000counted 2021
Last inspectedOctober 2023every 24 months

Location

StateCalifornia
CountyRiverside
Location08-riv-015-5.41-tmca
CarriesInterstate 15 SB
CrossesEmpire Creek
Coordinates33.50667, -117.15418

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length52.5 ft (16 m)
Max Span20.0 ft (6.1 m)
Deck Width68.9 ft (21 m)
Deck Area336 sq m
Main Spans3
Year Built1949 (reconstructed 1976)

Traffic

Avg Daily Traffic163,000 (2021)
Truck Traffic40%
Lanes On Bridge4

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number56 0261L

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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