US Bridges

FM 51 over Town Branch

Fair

Parker County, Texas · 0.4 MI N of US 180 · Structure no. 021840031302008

Built
1911
114 years old
Condition
Fair
inspected September 2024
Type
Arch - Deck
Concrete
Length
50 ft
1 main span
Daily traffic
13,717
2023 count
Owner
State
State Highway Agency

About this bridge

FM 51 over Town Branch is a concrete arch - deck carrying FM 51 over Town Branch in Parker County, Texas. It was built in 1911, so it is 114 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 13,717 vehicles a day, roughly 5% of them trucks, projected to reach 17,360 by 2040. The structure is 50 ft (15.2 m) long and 99 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFM 51
CrossesTown Branch
Location0.4 MI N of US 180
RouteState Highway 51
StateTexas
Coordinates32.76389, -97.79733
Functional classUrban Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length50 ft (15.2 m)
Longest span50 ft (15.2 m)
Deck width99 ft (30.2 m)
Roadway width75 ft (22.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,717 (2023)
Projected traffic17,360 by 2040
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 51 over Town Branch built?

It was built in 1911, making it 114 years old in 2025.

What condition is FM 51 over Town Branch 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 September 2024.

How much traffic does FM 51 over Town Branch carry?

About 13,717 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is FM 51 over Town Branch?

The structure is 50 ft (15.2 m) long with a longest span of 50 ft (15.2 m) and a deck 99 ft wide.

Who owns FM 51 over Town Branch?

It is owned by the State Highway Agency.