Structure 212530003805057 · Zapata County, TX

US 83 over Arroyo Tigre Chiquito

Carries US 83 over Arroyo Tigre Chiquito, 6.1 Mi S Of FM 2687.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT669 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

669 ft end to end, longest span 30 ft: about 1.9 football fields. 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.

Built1953rebuilt 1971
Length669.0 ft203.9 m
Daily traffic3,131counted 2024
Last inspectedApril 2023every 24 months

Location

StateTexas
CountyZapata
Location6.1 Mi S Of FM 2687
CarriesUS 83
CrossesArroyo Tigre Chiquito
Coordinates26.69400, -99.10909

Physical Characteristics

MaterialConcrete
DesignStringer/Multi-beam
Total Length669.0 ft (203.9 m)
Max Span29.9 ft (9.1 m)
Deck Width50.2 ft (15.3 m)
Deck Area3119.7 sq m
Main Spans22
Year Built1953 (reconstructed 1971)

Traffic

Avg Daily Traffic3,131 (2024)
Truck Traffic21%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number212530003805057

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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