US Bridges

SH 97 over Thompson Branch

Good

Gonzales County, Texas · 4.7 MI SW of IH 10 · Structure no. 130900002507230

Built
2001
24 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete
Length
42 ft
4 main spans
Daily traffic
1,934
2022 count
Owner
State
State Highway Agency

About this bridge

SH 97 over Thompson Branch is a concrete culvert carrying SH 97 over Thompson Branch in Gonzales County, Texas. It was built in 2001, so it is 24 years old, younger than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,934 vehicles a day, roughly 18% of them trucks, projected to reach 2,708 by 2042. The structure is 42 ft (12.8 m) long and 50 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

CarriesSH 97
CrossesThompson Branch
Location4.7 MI SW of IH 10
RouteState Highway 97
StateTexas
Coordinates29.60981, -97.33032
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span9 ft (2.7 m)
Deck width50 ft (15.2 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,934 (2022)
Projected traffic2,708 by 2042
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 97 over Thompson Branch built?

It was built in 2001, making it 24 years old in 2025.

What condition is SH 97 over Thompson Branch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

How much traffic does SH 97 over Thompson Branch carry?

About 1,934 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is SH 97 over Thompson Branch?

The structure is 42 ft (12.8 m) long with a longest span of 9 ft (2.7 m) and a deck 50 ft wide.

Who owns SH 97 over Thompson Branch?

It is owned by the State Highway Agency.