US Bridges

SH 29 over Big House Branch

Fair

Williamson County, Texas · 5.15 MI W of SH 95 · Structure no. 142460033702018

Built
1955
70 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete
Length
42 ft
5 main spans
Daily traffic
3,467
2021 count
Owner
State
State Highway Agency

About this bridge

SH 29 over Big House Branch is a concrete culvert carrying SH 29 over Big House Branch in Williamson County, Texas. It was built in 1955, so it is 70 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 3,467 vehicles a day, roughly 11% of them trucks, projected to reach 4,854 by 2041. The structure is 42 ft (12.8 m) long and 41 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesSH 29
CrossesBig House Branch
Location5.15 MI W of SH 95
RouteState Highway 29
CountyWilliamson County
StateTexas
Coordinates30.63661, -97.52295
Functional classRural Minor Arterial

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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
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 spans5
Design loadOther
Structure length42 ft (12.8 m)
Longest span8 ft (2.4 m)
Deck width41 ft (12.6 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,467 (2021)
Projected traffic4,854 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 Big House Branch built?

It was built in 1955, making it 70 years old in 2025.

What condition is SH 29 over Big House Branch 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 March 2023.

How much traffic does SH 29 over Big House Branch carry?

About 3,467 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is SH 29 over Big House Branch?

The structure is 42 ft (12.8 m) long with a longest span of 8 ft (2.4 m) and a deck 41 ft wide.

Who owns SH 29 over Big House Branch?

It is owned by the State Highway Agency.