Structure 150070001704203 · Atascosa County, TX

IH 35 SB over FM 3175

Carries IH 35 SB over FM 3175, 0.70 Mi SW Of FM 2790.

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 FT162 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

162 ft end to end, longest span 60 ft: about 2 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.

Built196759 years old
Length162.1 ft49.4 m
Daily traffic14,753counted 2019
Last inspectedMay 2024every 24 months

Location

StateTexas
CountyAtascosa
Location0.70 Mi SW Of FM 2790
CarriesIH 35 SB
CrossesFM 3175
Coordinates29.22246, -98.79430

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length162.1 ft (49.4 m)
Max Span60.0 ft (18.3 m)
Deck Width40.4 ft (12.3 m)
Deck Area607.6 sq m
Main Spans3
Year Built1967

Traffic

Avg Daily Traffic14,753 (2019)
Truck Traffic20%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number150070001704203

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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