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Ih 37 NB over Old US 181/SPUR 122

Bexar County, Texas · rated Fair in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Ih 37 NB over Old US 181/SPUR 122 in Bexar County, Texas, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1967 and reconstructed in 2009, making it 58 years old at the 2025 inventory.
It carries about 42,052 vehicles a day (traffic count year 2019).
Its listed owner is the state highway agency.
It is one of 1,088 of the 2,356 inventoried bridges in Bexar County rated fair (46.2%); 8 (0.3%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings


Structure	Continuous steel stringer or multi-beam girder
Length	about 220 ft
Location	1.10 Mi S of Ih 410
NBI structure number	150150007308177
Condition class	Fair

Source: FHWA National Bridge Inventory, 2025 data as reported by the Texas department of transportation.

Bridge	Built	Vehicles/day	Condition
Ih 410 over Drain	2008	302,626	Fair
Ih 410 over Drain	2000	286,681	Good
Ih 410 Ml & Wbfr over Drain	1976	249,750	Fair
Ih 410 Ml & Wbfr over Draw	1957	249,750	Fair
Ih 10 over Rock Creek	1960	223,977	Fair
Ih 10 over Drain	1960	223,977	Good