US Bridges

SH 29 over Drain

Fair

Williamson County, Texas · 6.20 MI W of US 183 · Structure no. 142460015103033

Built
1958
67 years old, rebuilt 2022
Condition
Fair
inspected February 2023
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
14,018
2019 count
Owner
State
State Highway Agency

About this bridge

SH 29 over Drain is a concrete culvert carrying SH 29 over Drain in Williamson County, Texas. It was built in 1958 and reconstructed in 2022, so it is 67 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 14,018 vehicles a day, roughly 18% of them trucks, projected to reach 16,822 by 2039. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 16.8 mi (27 km).

CarriesSH 29
CrossesDrain
Location6.20 MI W of US 183
RouteState Highway 29
StateTexas
Coordinates30.68914, -97.96911
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: 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
DeckNot applicable
Main spans2
Design loadOther
Structure length25 ft (7.6 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,018 (2019)
Projected traffic16,822 by 2039
Trucks18%
Lanes on structure5
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 29 over Drain built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2022.

What condition is SH 29 over Drain in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2023.

How much traffic does SH 29 over Drain carry?

About 14,018 vehicles per day (2019 count), of which roughly 18% are trucks.

How long is SH 29 over Drain?

The structure is 25 ft (7.6 m) long with a longest span of 10 ft (3 m).

Who owns SH 29 over Drain?

It is owned by the State Highway Agency.