US Bridges

US 77 NB FR over East Main Drain

Good

Willacy County, Texas · 2.6 MI N of SH 186 · Structure no. 212450032710021

Built
1969
56 years old
Condition
Good
inspected February 2023
Type
Slab
Concrete Continuous
Length
100 ft
4 main spans
Daily traffic
148
2021 count
Owner
State
State Highway Agency

About this bridge

US 77 NB FR over East Main Drain is a concrete continuous slab carrying US 77 NB FR over East Main Drain in Willacy County, Texas. It was built in 1969, so it is 56 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 148 vehicles a day, roughly 3% of them trucks, projected to reach 110 by 2031. The structure is 100 ft (30.5 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUS 77 NB FR
CrossesEast Main Drain
Location2.6 MI N of SH 186
RouteU.S. Route 77
StateTexas
Coordinates26.51923, -97.7738
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span27 ft (8.2 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic148 (2021)
Projected traffic110 by 2031
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 US 77 NB FR over East Main Drain built?

It was built in 1969, making it 56 years old in 2025.

What condition is US 77 NB FR over East Main Drain 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 February 2023.

How much traffic does US 77 NB FR over East Main Drain carry?

About 148 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is US 77 NB FR over East Main Drain?

The structure is 100 ft (30.5 m) long with a longest span of 27 ft (8.2 m) and a deck 42 ft wide.

Who owns US 77 NB FR over East Main Drain?

It is owned by the State Highway Agency.