US Bridges

US 277 over South Main Canal

Fair

Maverick County, Texas · 0.90 MI N of SH 131 · Structure no. 221590029903006

Built
1931
94 years old, rebuilt 1954
Condition
Fair
inspected October 2023
Type
Tee Beam
Concrete
Length
85 ft
5 main spans
Daily traffic
3,276
2020 count
Owner
State
State Highway Agency

About this bridge

US 277 over South Main Canal is a concrete tee beam carrying US 277 over South Main Canal in Maverick County, Texas. It was built in 1931 and reconstructed in 1954, so it is 94 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 3,276 vehicles a day, roughly 21% of them trucks, projected to reach 5,670 by 2033. The structure is 85 ft (25.9 m) long and 40 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

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CarriesUS 277
CrossesSouth Main Canal
Location0.90 MI N of SH 131
RouteU.S. Route 277
CountyMaverick County
StateTexas
Coordinates28.87301, -100.55696
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadUnknown
Structure length85 ft (25.9 m)
Longest span17 ft (5.2 m)
Deck width40 ft (12.2 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,276 (2020)
Projected traffic5,670 by 2033
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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 US 277 over South Main Canal built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1954.

What condition is US 277 over South Main 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 October 2023.

How much traffic does US 277 over South Main Canal carry?

About 3,276 vehicles per day (2020 count), of which roughly 21% are trucks.

How long is US 277 over South Main Canal?

The structure is 85 ft (25.9 m) long with a longest span of 17 ft (5.2 m) and a deck 40 ft wide.

Who owns US 277 over South Main Canal?

It is owned by the State Highway Agency.