Structure 19328 · Calhoun County, AL

Sr1/us431 over Sr21

Carries Sr1/us431 over Sr21, Intersect Of Sr1/sr21.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT529 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

529 ft end to end, longest span 130 ft: about 7 semi-trucks nose to tail. 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.

Built201115 years old
Length528.9 ft161.2 m
Daily traffic5,042counted 2022
Last inspectedSeptember 2023every 24 months

Location

StateAlabama
CountyCalhoun
LocationIntersect Of Sr1/sr21
CarriesSr1/us431
CrossesSr21
Coordinates33.70202, -85.82283

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length528.9 ft (161.2 m)
Max Span129.9 ft (39.6 m)
Deck Width54.8 ft (16.7 m)
Deck Area2692.0 sq m
Main Spans4
Year Built2011

Traffic

Avg Daily Traffic5,042 (2022)
Truck Traffic9%
Lanes On Bridge3
Lanes Under Bridge7

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number019328

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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