US Bridges

US 77 SB over Drain

Fair

Nueces County, Texas · 3.0 MI N of FM 665 · Structure no. 161780010202005

Built
1924
101 years old, rebuilt 1947
Condition
Fair
inspected May 2024
Type
Culvert
Concrete
Length
76 ft
7 main spans
Daily traffic
11,107
2022 count
Owner
State
State Highway Agency

About this bridge

US 77 SB over Drain is a concrete culvert carrying US 77 SB over Drain in Nueces County, Texas. It was built in 1924 and reconstructed in 1947, so it is 101 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 11,107 vehicles a day, roughly 37% of them trucks, projected to reach 31,100 by 2042. The structure is 76 ft (23.2 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 77 SB
CrossesDrain
Location3.0 MI N of FM 665
RouteU.S. Route 77
StateTexas
Coordinates27.71202, -97.72262
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than 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 spans7
Design loadUnknown
Structure length76 ft (23.2 m)
Longest span10 ft (3 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,107 (2022)
Projected traffic31,100 by 2042
Trucks37%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 SB over Drain built?

It was built in 1924, making it 101 years old in 2025. It was reconstructed in 1947.

What condition is US 77 SB over Drain 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 May 2024.

How much traffic does US 77 SB over Drain carry?

About 11,107 vehicles per day (2022 count), of which roughly 37% are trucks.

How long is US 77 SB over Drain?

The structure is 76 ft (23.2 m) long with a longest span of 10 ft (3 m) and a deck 43 ft wide.

Who owns US 77 SB over Drain?

It is owned by the State Highway Agency.