US Bridges

IH 35 NB over Slaughter Creek

Good

Travis County, Texas · 5.1 MI S of SH 71 · Structure no. 142270001601003

Built
1934
91 years old, rebuilt 1987
Condition
Good
inspected November 2024
Type
Tee Beam
Concrete
Length
322 ft
7 main spans
Daily traffic
65,675
2023 count
Owner
State
State Highway Agency

About this bridge

IH 35 NB over Slaughter Creek is a concrete tee beam carrying IH 35 NB over Slaughter Creek in Travis County, Texas. It was built in 1934 and reconstructed in 1987, so it is 91 years old, older 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 65,675 vehicles a day, roughly 11% of them trucks, projected to reach 80,240 by 2036. The structure is 322 ft (98.1 m) long and 68 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIH 35 NB
CrossesSlaughter Creek
Location5.1 MI S of SH 71
RouteInterstate 35
StateTexas
Coordinates30.15281, -97.79152
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating33 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadH 15
Structure length322 ft (98.1 m)
Longest span46 ft (14 m)
Deck width68 ft (20.8 m)
Roadway width67 ft (20.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic65,675 (2023)
Projected traffic80,240 by 2036
Trucks11%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 IH 35 NB over Slaughter Creek built?

It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1987.

What condition is IH 35 NB over Slaughter Creek 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 November 2024.

How much traffic does IH 35 NB over Slaughter Creek carry?

About 65,675 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is IH 35 NB over Slaughter Creek?

The structure is 322 ft (98.1 m) long with a longest span of 46 ft (14 m) and a deck 68 ft wide.

Who owns IH 35 NB over Slaughter Creek?

It is owned by the State Highway Agency.