US Bridges

SH 171 over Mustang Creek

Fair

Johnson County, Texas · 0.9 MI NW of FM 916 · Structure no. 021270001902035

Built
1961
64 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
241 ft
6 main spans
Daily traffic
4,957
2023 count
Owner
State
State Highway Agency

About this bridge

SH 171 over Mustang Creek is a concrete stringer/multi-beam or girder carrying SH 171 over Mustang Creek in Johnson County, Texas. It was built in 1961, so it is 64 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 4,957 vehicles a day, roughly 11% of them trucks, projected to reach 3,860 by 2038. The structure is 241 ft (73.5 m) long and 33 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesSH 171
CrossesMustang Creek
Location0.9 MI NW of FM 916
RouteState Highway 171
CountyJohnson County
StateTexas
Coordinates32.27523, -97.30191
Functional classRural Major 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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadOther
Structure length241 ft (73.5 m)
Longest span40 ft (12.2 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,957 (2023)
Projected traffic3,860 by 2038
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemNo

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 SH 171 over Mustang Creek built?

It was built in 1961, making it 64 years old in 2025.

What condition is SH 171 over Mustang 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 October 2024.

How much traffic does SH 171 over Mustang Creek carry?

About 4,957 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SH 171 over Mustang Creek?

The structure is 241 ft (73.5 m) long with a longest span of 40 ft (12.2 m) and a deck 33 ft wide.

Who owns SH 171 over Mustang Creek?

It is owned by the State Highway Agency.