US Bridges

SH 29 over Big Sandy Creek

Fair

Llano County, Texas · 13.2 MI E of SH 16 · Structure no. 141500015004024

Built
1940
85 years old, rebuilt 1971
Condition
Fair
inspected May 2023
Type
Slab
Concrete Continuous
Length
120 ft
6 main spans
Daily traffic
5,276
2020 count
Owner
State
State Highway Agency

About this bridge

SH 29 over Big Sandy Creek is a concrete continuous slab carrying SH 29 over Big Sandy Creek in Llano County, Texas. It was built in 1940 and reconstructed in 1971, so it is 85 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 5,276 vehicles a day, roughly 9% of them trucks, projected to reach 4,918 by 2039. The structure is 120 ft (36.6 m) long and 50 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

Open in Google Maps
CarriesSH 29
CrossesBig Sandy Creek
Location13.2 MI E of SH 16
RouteState Highway 29
CountyLlano County
StateTexas
Coordinates30.73288, -98.48639
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadH 15
Structure length120 ft (36.6 m)
Longest span20 ft (6.1 m)
Deck width50 ft (15.3 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,276 (2020)
Projected traffic4,918 by 2039
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 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 Sandy Creek built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1971.

What condition is SH 29 over Big Sandy Creek 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 May 2023.

How much traffic does SH 29 over Big Sandy Creek carry?

About 5,276 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is SH 29 over Big Sandy Creek?

The structure is 120 ft (36.6 m) long with a longest span of 20 ft (6.1 m) and a deck 50 ft wide.

Who owns SH 29 over Big Sandy Creek?

It is owned by the State Highway Agency.