US Bridges

CR403 (welch St) over Branch of Mustang Creek

Fair

Williamson County, Texas · 0.70 MI W of US 79 · Structure no. 142460C00695001

Built
1989
36 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete
Length
29 ft
3 main spans
Daily traffic
400
2010 count
Owner
City
City or Municipal Highway Agency

About this bridge

CR403 (welch St) over Branch of Mustang Creek is a concrete culvert carrying CR403 (welch St) over Branch of Mustang Creek in Williamson County, Texas. It was built in 1989, so it is 36 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 400 vehicles a day, projected to reach 640 by 2030. The structure is 29 ft (8.8 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCR403 (welch St)
CrossesBranch of Mustang Creek
Location0.70 MI W of US 79
RouteCounty Highway 403
CountyWilliamson County
StateTexas
Coordinates30.56198, -97.44464
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span9 ft (2.7 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2010)
Projected traffic640 by 2030
Trucks0%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 CR403 (welch St) over Branch of Mustang Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is CR403 (welch St) over Branch of 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 December 2023.

How much traffic does CR403 (welch St) over Branch of Mustang Creek carry?

About 400 vehicles per day (2010 count).

How long is CR403 (welch St) over Branch of Mustang Creek?

The structure is 29 ft (8.8 m) long with a longest span of 9 ft (2.7 m) and a deck 28 ft wide.

Who owns CR403 (welch St) over Branch of Mustang Creek?

It is owned by the City or Municipal Highway Agency.