Structure 625302690403671 · Tangipahoa County, LA

La0442 over I-55

Carries La0442 over I-55, La0442.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT222 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

222 ft end to end, longest span 70 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.

Built197056 years old
Length222.1 ft67.7 m
Daily traffic5,026counted 2021
Last inspectedJanuary 2025every 48 months

Location

StateLouisiana
CountyTangipahoa
LocationLa0442
CarriesLa0442
CrossesI-55
Coordinates30.57717, -90.50470

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length222.1 ft (67.7 m)
Max Span69.9 ft (21.3 m)
Deck Width33.8 ft (10.3 m)
Deck Area697.3 sq m
Main Spans4
Year Built1970

Traffic

Avg Daily Traffic5,026 (2021)
Truck Traffic9%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number625302690403671

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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