US Bridges

SH 29 over IH 35

Fair

Williamson County, Texas · 1.5 MI S of RM 2338 · Structure no. 142460001508245

Built
1965
60 years old, rebuilt 1986
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
292 ft
5 main spans
Daily traffic
34,684
2021 count
Owner
State
State Highway Agency

About this bridge

SH 29 over IH 35 is a prestressed concrete stringer/multi-beam or girder carrying SH 29 over IH 35 in Williamson County, Texas. It was built in 1965 and reconstructed in 1986, so it is 60 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 34,684 vehicles a day, roughly 7% of them trucks, projected to reach 48,558 by 2041. The structure is 292 ft (89 m) long and 78 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesSH 29
CrossesIH 35
Location1.5 MI S of RM 2338
RouteState Highway 29
StateTexas
Coordinates30.63304, -97.69136
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating32 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length292 ft (89 m)
Longest span65 ft (19.8 m)
Deck width78 ft (23.8 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,684 (2021)
Projected traffic48,558 by 2041
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 29 over IH 35 built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1986.

What condition is SH 29 over IH 35 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 IH 35 carry?

About 34,684 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is SH 29 over IH 35?

The structure is 292 ft (89 m) long with a longest span of 65 ft (19.8 m) and a deck 78 ft wide.

Who owns SH 29 over IH 35?

It is owned by the State Highway Agency.