US Bridges

FM 647 over Middle Mustang Creek

Good

Wharton County, Texas · 0.50 MI W of US 59 · Structure no. 132410301402001

Built
1967
58 years old
Condition
Good
inspected December 2024
Type
Culvert
Concrete
Length
34 ft
3 main spans
Daily traffic
87
2023 count
Owner
State
State Highway Agency

About this bridge

FM 647 over Middle Mustang Creek is a concrete culvert carrying FM 647 over Middle Mustang Creek in Wharton County, Texas. It was built in 1967, so it is 58 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 87 vehicles a day, roughly 8% of them trucks, projected to reach 104 by 2042. The structure is 34 ft (10.4 m) long and 29 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFM 647
CrossesMiddle Mustang Creek
Location0.50 MI W of US 59
RouteState Highway 647
StateTexas
Coordinates29.10479, -96.43084
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2024
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 rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span10 ft (3 m)
Deck width29 ft (8.9 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic87 (2023)
Projected traffic104 by 2042
Trucks8%
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

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 FM 647 over Middle Mustang Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is FM 647 over Middle Mustang Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2024.

How much traffic does FM 647 over Middle Mustang Creek carry?

About 87 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is FM 647 over Middle Mustang Creek?

The structure is 34 ft (10.4 m) long with a longest span of 10 ft (3 m) and a deck 29 ft wide.

Who owns FM 647 over Middle Mustang Creek?

It is owned by the State Highway Agency.