Structure 150150007308203 · Bexar County, TX

IH 37 SB over Loop 13

Carries IH 37 SB over Loop 13, 4.30 Mi S Of IH 10.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT250 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

250 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.

Built196957 years old
Length250.0 ft76.2 m
Daily traffic36,761counted 2019
Last inspectedAugust 2024every 24 months

Location

StateTexas
CountyBexar
Location4.30 Mi S Of IH 10
CarriesIH 37 SB
CrossesLoop 13
Coordinates29.35269, -98.42821

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length250.0 ft (76.2 m)
Max Span69.9 ft (21.3 m)
Deck Width42.3 ft (12.9 m)
Deck Area983.0 sq m
Main Spans4
Year Built1969

Traffic

Avg Daily Traffic36,761 (2019)
Truck Traffic3%
Lanes On Bridge2
Lanes Under Bridge10

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number150150007308203

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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