US Bridges

FM 647 over US 59

Fair

Wharton County, Texas · 1.60 MI SW of FM 1160 · Structure no. 132410008906175

Built
1976
49 years old
Condition
Fair
inspected December 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
430 ft
6 main spans
Daily traffic
86
2021 count
Owner
State
State Highway Agency

About this bridge

FM 647 over US 59 is a prestressed concrete stringer/multi-beam or girder carrying FM 647 over US 59 in Wharton County, Texas. It was built in 1976, so it is 49 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 86 vehicles a day, roughly 17% of them trucks, projected to reach 120 by 2041. The structure is 430 ft (131.1 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFM 647
CrossesUS 59
Location1.60 MI SW of FM 1160
RouteState Highway 647
StateTexas
Coordinates29.10474, -96.42218
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length430 ft (131.1 m)
Longest span100 ft (30.5 m)
Deck width36 ft (11.1 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic86 (2021)
Projected traffic120 by 2041
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was FM 647 over US 59 built?

It was built in 1976, making it 49 years old in 2025.

What condition is FM 647 over US 59 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 2022.

How much traffic does FM 647 over US 59 carry?

About 86 vehicles per day (2021 count), of which roughly 17% are trucks.

How long is FM 647 over US 59?

The structure is 430 ft (131.1 m) long with a longest span of 100 ft (30.5 m) and a deck 36 ft wide.

Who owns FM 647 over US 59?

It is owned by the State Highway Agency.