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SH 159 over Muddy Branch

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

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

SH 159 over Muddy Branch in Austin County, Texas, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1928 and reconstructed in 1958, making it 97 years old at the 2025 inventory.
It carries about 5,224 vehicles a day (traffic count year 2020).
Its listed owner is the state highway agency.
It is one of 71 of the 218 inventoried bridges in Austin County rated fair (32.6%); 4 (1.8%) 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

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

Bridge	Built	Vehicles/day	Condition
Ih 10 over Draw	2020	65,213	Good
Ih 10 over Draw	2020	65,213	Good
Ih 10 over Chew/bartlett Rd	2021	65,213	Good
Ih 10 over FM 1458	2021	56,725	Good
Mlcak Rd over Ih 10	2022	56,083	Good
Ih 10 over US 90	2021	52,333	Good