Structure 16951 · Bibb County, AL

US 82 over Cahaba River (-)

Carries US 82 over Cahaba River (-), 0.10mi W Jct SR 25.

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 overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT840 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

840 ft end to end, longest span 120 ft: about 2.3 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.

Built199729 years old
Length839.9 ft256 m
Daily traffic6,109counted 2021
Last inspectedJune 2024every 24 months

Location

StateAlabama
CountyBibb
Location0.10mi W Jct SR 25
CarriesUS 82
CrossesCahaba River (-)
Coordinates32.95803, -87.14076

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length839.9 ft (256 m)
Max Span120.1 ft (36.6 m)
Deck Width43.0 ft (13.1 m)
Deck Area3353.6 sq m
Main Spans7
Year Built1997

Traffic

Avg Daily Traffic6,109 (2021)
Truck Traffic11%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number016951

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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