Structure 611704540102782 · East Baton Rouge County, LA

I0012 over US 61/airline

Carries I0012 over US 61/airline, I0012.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT476 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 7/9

476 ft end to end, longest span 54 ft: about 7 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.

Built198640 years old
Length476.0 ft145.1 m
Daily traffic32,092counted 2021
Last inspectedApril 2024every 24 months

Location

StateLouisiana
CountyEast Baton Rouge
LocationI0012
CarriesI0012
CrossesUS 61/airline
Coordinates30.42358, -91.07584

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length476.0 ft (145.1 m)
Max Span54.1 ft (16.5 m)
Deck Width69.9 ft (21.3 m)
Deck Area3090.6 sq m
Main Spans10
Year Built1986

Traffic

Avg Daily Traffic32,092 (2021)
Truck Traffic9%
Lanes On Bridge4
Lanes Under Bridge6

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number611704540102782

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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