US Bridges

Bu 77 over Carreta Creek

FairPosted for load

Nueces County, Texas · 1.25 MI S of FM 70 · Structure no. 161780010211012

Built
1921
104 years old, rebuilt 1993
Condition
Fair
inspected May 2024
Type
Tee Beam
Concrete
Length
135 ft
6 main spans
Daily traffic
7,508
2024 count
Owner
State
State Highway Agency

About this bridge

Bu 77 over Carreta Creek is a concrete tee beam carrying Bu 77 over Carreta Creek in Nueces County, Texas. It was built in 1921 and reconstructed in 1993, so it is 104 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. Its operating status is: posted for load restriction.

It carries about 7,508 vehicles a day, roughly 4% of them trucks, projected to reach 8,442 by 2042. The structure is 135 ft (41.1 m) long and 72 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBu 77
CrossesCarreta Creek
Location1.25 MI S of FM 70
RouteState Highway 77
StateTexas
Coordinates27.58143, -97.80484
Functional classRural 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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating48.9 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadUnknown
Structure length135 ft (41.1 m)
Longest span22 ft (6.7 m)
Deck width72 ft (21.8 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,508 (2024)
Projected traffic8,442 by 2042
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 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 Bu 77 over Carreta Creek built?

It was built in 1921, making it 104 years old in 2025. It was reconstructed in 1993.

What condition is Bu 77 over Carreta Creek 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 Bu 77 over Carreta Creek carry?

About 7,508 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Bu 77 over Carreta Creek?

The structure is 135 ft (41.1 m) long with a longest span of 22 ft (6.7 m) and a deck 72 ft wide.

Who owns Bu 77 over Carreta Creek?

It is owned by the State Highway Agency.