US Bridges

FM 770 over W Branch Devers Canal

Fair

Liberty County, Texas · 4.8 MI S of US 90 · Structure no. 201460109603022

Built
1955
70 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
35 ft
4 main spans
Daily traffic
929
2020 count
Owner
State
State Highway Agency

About this bridge

FM 770 over W Branch Devers Canal is a concrete culvert carrying FM 770 over W Branch Devers Canal in Liberty County, Texas. It was built in 1955, so it is 70 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 929 vehicles a day, roughly 11% of them trucks, projected to reach 1,280 by 2033. The structure is 35 ft (10.7 m) long and 33 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesFM 770
CrossesW Branch Devers Canal
Location4.8 MI S of US 90
RouteState Highway 770
CountyLiberty County
StateTexas
Coordinates29.97842, -94.6829
Functional classRural Major 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadOther
Structure length35 ft (10.7 m)
Longest span8 ft (2.4 m)
Deck width33 ft (10.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic929 (2020)
Projected traffic1,280 by 2033
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$18,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 770 over W Branch Devers Canal built?

It was built in 1955, making it 70 years old in 2025.

What condition is FM 770 over W Branch Devers Canal 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 April 2024.

How much traffic does FM 770 over W Branch Devers Canal carry?

About 929 vehicles per day (2020 count), of which roughly 11% are trucks.

How long is FM 770 over W Branch Devers Canal?

The structure is 35 ft (10.7 m) long with a longest span of 8 ft (2.4 m) and a deck 33 ft wide.

Who owns FM 770 over W Branch Devers Canal?

It is owned by the State Highway Agency.