Structure 11513 · Montgomery County, AL

Air Base BLVD over L*n Rr

Carries Air Base BLVD over L*n Rr, 0.1 Mi N Of Mobile HWY.

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
SEMI-TRUCK · 72 FT164 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

164 ft end to end, longest span 60 ft: about 2 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.

Built197551 years old
Length164.0 ft50 m
Daily traffic8,470counted 1988
Last inspectedDecember 2024every 24 months

Location

StateAlabama
CountyMontgomery
Location0.1 Mi N Of Mobile HWY
CarriesAir Base BLVD
CrossesL*n Rr
Coordinates32.34773, -86.34092

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length164.0 ft (50 m)
Max Span60.0 ft (18.3 m)
Deck Width55.1 ft (16.8 m)
Deck Area840 sq m
Main Spans3
Year Built1975

Traffic

Avg Daily Traffic8,470 (1988)
Truck Traffic2%
Lanes On Bridge3

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number011513

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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