US Bridges

Manchaca RD over Williamson Creek

Fair

Travis County, Texas · 0.70 MI S of US 290 · Structure no. 142270B00930011

Built
1968
57 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete
Length
127 ft
7 main spans
Daily traffic
13,710
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Manchaca RD over Williamson Creek is a concrete slab carrying Manchaca RD over Williamson Creek in Travis County, Texas. It was built in 1968, so it is 57 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 13,710 vehicles a day, projected to reach 35,000 by 2034. The structure is 127 ft (38.6 m) long and 60 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesManchaca RD
CrossesWilliamson Creek
Location0.70 MI S of US 290
RouteCity Street 0
CountyTravis County
StateTexas
Coordinates30.22142, -97.79371
Functional classUrban Collector

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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadUnknown
Structure length127 ft (38.6 m)
Longest span18 ft (5.5 m)
Deck width60 ft (18.3 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,710 (2020)
Projected traffic35,000 by 2034
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$15,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Manchaca RD over Williamson Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is Manchaca RD over Williamson 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 2024.

How much traffic does Manchaca RD over Williamson Creek carry?

About 13,710 vehicles per day (2020 count).

How long is Manchaca RD over Williamson Creek?

The structure is 127 ft (38.6 m) long with a longest span of 18 ft (5.5 m) and a deck 60 ft wide.

Who owns Manchaca RD over Williamson Creek?

It is owned by the City or Municipal Highway Agency.