US Bridges

Amherst DR over Walnut Creek Branch

Fair

Travis County, Texas · 0.15 MI S of FM 734 · Structure no. 142270B05750001

Built
1992
33 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete
Length
64 ft
6 main spans
Daily traffic
4,297
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Amherst DR over Walnut Creek Branch is a concrete culvert carrying Amherst DR over Walnut Creek Branch in Travis County, Texas. It was built in 1992, so it is 33 years old, younger 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 4,297 vehicles a day, roughly 3% of them trucks, projected to reach 6,016 by 2042. The structure is 64 ft (19.5 m) long and 90 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesAmherst DR
CrossesWalnut Creek Branch
Location0.15 MI S of FM 734
RouteCity Street 0
CountyTravis County
StateTexas
Coordinates30.42264, -97.71492
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadUnknown
Structure length64 ft (19.5 m)
Longest span10 ft (3 m)
Deck width90 ft (27.4 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,297 (2020)
Projected traffic6,016 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$8,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Amherst DR over Walnut Creek Branch built?

It was built in 1992, making it 33 years old in 2025.

What condition is Amherst DR over Walnut Creek Branch 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 2024.

How much traffic does Amherst DR over Walnut Creek Branch carry?

About 4,297 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is Amherst DR over Walnut Creek Branch?

The structure is 64 ft (19.5 m) long with a longest span of 10 ft (3 m) and a deck 90 ft wide.

Who owns Amherst DR over Walnut Creek Branch?

It is owned by the City or Municipal Highway Agency.