Structure 1391 · Limestone County, AL

SR 3 over Southern Rr

Carries SR 3 over Southern Rr, 0.2 M N Jct SR 3 & SR 20.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT107 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

107 ft end to end. 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 girder bridge.

Built193690 years old
Length107.0 ft32.6 m
Daily traffic8,210counted 2023
Last inspectedJune 2023every 24 months

Location

StateAlabama
CountyLimestone
Location0.2 M N Jct SR 3 & SR 20
CarriesSR 3
CrossesSouthern Rr
Coordinates34.63269, -86.95103

Physical Characteristics

MaterialSteel
DesignGirder and Floorbeam
Total Length107.0 ft (32.6 m)
Max Span36.1 ft (11 m)
Deck Width27.2 ft (8.3 m)
Deck Area270.6 sq m
Main Spans1
Year Built1936

Traffic

Avg Daily Traffic8,210 (2023)
Truck Traffic7%
Lanes On Bridge1

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number001391

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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