Structure 1193 · Yuma County, AZ

I-8 WB over Frontage RD

Carries I-8 WB over Frontage RD, 12.8 Mi E Jct US 95.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT94 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

94 ft end to end, longest span 35 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.

Built196660 years old
Length94.2 ft28.7 m
Daily traffic9,849counted 2021
Last inspectedFebruary 2023every 24 months

Location

StateArizona
CountyYuma
Location12.8 Mi E Jct US 95
CarriesI-8 WB
CrossesFrontage RD
Coordinates32.66760, -114.39780

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length94.2 ft (28.7 m)
Max Span35.1 ft (10.7 m)
Deck Width40.7 ft (12.4 m)
Deck Area355.9 sq m
Main Spans3
Year Built1966

Traffic

Avg Daily Traffic9,849 (2021)
Truck Traffic26%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number01193

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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