US Bridges

CR 421 - Pct 4 over Mustang Creek

Fair

Johnson County, Texas · 1.0 MI E of SH 171 · Structure no. 021270AA0650001

Built
2004
21 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
39 ft
1 main span
Daily traffic
153
2024 count
Owner
County
County Highway Agency

About this bridge

CR 421 - Pct 4 over Mustang Creek is a steel stringer/multi-beam or girder carrying CR 421 - Pct 4 over Mustang Creek in Johnson County, Texas. It was built in 2004, so it is 21 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 153 vehicles a day, roughly 3% of them trucks, projected to reach 164 by 2041. The structure is 39 ft (11.9 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCR 421 - Pct 4
CrossesMustang Creek
Location1.0 MI E of SH 171
RouteCounty Highway 421
CountyJohnson County
StateTexas
Coordinates32.28381, -97.29118
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
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 inspectionNovember 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length39 ft (11.9 m)
Longest span38 ft (11.6 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic153 (2024)
Projected traffic164 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 421 - Pct 4 over Mustang Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is CR 421 - Pct 4 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 November 2024.

How much traffic does CR 421 - Pct 4 over Mustang Creek carry?

About 153 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is CR 421 - Pct 4 over Mustang Creek?

The structure is 39 ft (11.9 m) long with a longest span of 38 ft (11.6 m) and a deck 24 ft wide.

Who owns CR 421 - Pct 4 over Mustang Creek?

It is owned by the County Highway Agency.