Structure 10496 · Jefferson County, AL

I - 20/59 West over Vanderbilt RD

Carries I - 20/59 West over Vanderbilt RD, I 59 * Vanderbilt RD.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT270 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 6/9

270 ft end to end, longest span 73 ft: about 4 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.

Built197155 years old
Length270.0 ft82.3 m
Daily traffic76,895counted 2024
Last inspectedJanuary 2024every 24 months

Location

StateAlabama
CountyJefferson
LocationI 59 * Vanderbilt RD
CarriesI - 20/59 West
CrossesVanderbilt RD
Coordinates33.53873, -86.79234

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length270.0 ft (82.3 m)
Max Span73.2 ft (22.3 m)
Deck Width65.0 ft (19.8 m)
Deck Area1629.5 sq m
Main Spans4
Year Built1971

Traffic

Avg Daily Traffic76,895 (2024)
Truck Traffic10%
Lanes On Bridge4
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number010496

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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