Structure 20569 · Mobile County, AL

SR 217 over Big Creek

Carries SR 217 over Big Creek, 5.1m N Co RD 63.

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
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT180 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

180 ft end to end, longest span 45 ft: about 3 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.

Built20233 years old
Length180.1 ft54.9 m
Daily traffic1,218counted 2022
Last inspectedJuly 2023every 24 months

Location

StateAlabama
CountyMobile
Location5.1m N Co RD 63
CarriesSR 217
CrossesBig Creek
Coordinates30.97636, -88.32097

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length180.1 ft (54.9 m)
Max Span44.9 ft (13.7 m)
Deck Width46.3 ft (14.1 m)
Deck Area774.1 sq m
Main Spans4
Year Built2023

Traffic

Avg Daily Traffic1,218 (2022)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number020569

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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