Structure 20140 · Maricopa County, AZ

WB Sr202l S Mntn over Salt River

Carries WB Sr202l S Mntn over Salt River, 4.7 Mi S. I-10/ Smf Ti.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,660 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

2,660 ft end to end, longest span 170 ft: about 7.4 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 multi-beam bridge.

Built20197 years old
Length2660.1 ft810.8 m
Daily traffic33,933counted 2023
Last inspectedDecember 2023every 24 months

Location

StateArizona
CountyMaricopa
Location4.7 Mi S. I-10/ Smf Ti
CarriesWB Sr202l S Mntn
CrossesSalt River
Coordinates33.39570, -112.19190

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length2660.1 ft (810.8 m)
Max Span169.9 ft (51.8 m)
Deck Width85.3 ft (26 m)
Deck Area21080.8 sq m
Main Spans16
Year Built2019

Traffic

Avg Daily Traffic33,933 (2023)
Truck Traffic18%
Lanes On Bridge5

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number20140

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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