Structure 212450032706018 · Willacy County, TX

US 77 Bus over West Main Drain

Carries US 77 Bus over West Main Drain, 0.01 Mi N Of FM 1761.

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
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT110 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

110 ft end to end, longest span 25 ft. 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 slab bridge.

Built1952rebuilt 1972
Length109.9 ft33.5 m
Daily traffic450counted 2024
Last inspectedFebruary 2023every 24 months

Location

StateTexas
CountyWillacy
Location0.01 Mi N Of FM 1761
CarriesUS 77 Bus
CrossesWest Main Drain
Coordinates26.51920, -97.77763

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length109.9 ft (33.5 m)
Max Span24.9 ft (7.6 m)
Deck Width50.2 ft (15.3 m)
Deck Area512.5 sq m
Main Spans5
Year Built1952 (reconstructed 1972)

Traffic

Avg Daily Traffic450 (2024)
Truck Traffic25%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number212450032706018

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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