US Bridges

S 1st Street over Williamson Creek

Fair

Travis County, Texas · 1.15 MI S of SH 71 · Structure no. 142270B00002012

Built
1973
52 years old
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
200 ft
4 main spans
Daily traffic
11,964
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

S 1st Street over Williamson Creek is a prestressed concrete box beam or girders - multiple carrying S 1st Street over Williamson Creek in Travis County, Texas. It was built in 1973, so it is 52 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 11,964 vehicles a day, projected to reach 29,500 by 2030. The structure is 200 ft (61 m) long and 58 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesS 1st Street
CrossesWilliamson Creek
Location1.15 MI S of SH 71
RouteCity Street 0
CountyTravis County
StateTexas
Coordinates30.2119, -97.77898
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 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 alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length200 ft (61 m)
Longest span50 ft (15.2 m)
Deck width58 ft (17.7 m)
Roadway width44 ft (13.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,964 (2020)
Projected traffic29,500 by 2030
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$23,000
NavigationNo navigation control on waterway

Frequently asked questions

When was S 1st Street over Williamson Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is S 1st Street 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 March 2024.

How much traffic does S 1st Street over Williamson Creek carry?

About 11,964 vehicles per day (2020 count).

How long is S 1st Street over Williamson Creek?

The structure is 200 ft (61 m) long with a longest span of 50 ft (15.2 m) and a deck 58 ft wide.

Who owns S 1st Street over Williamson Creek?

It is owned by the City or Municipal Highway Agency.