US Bridges

US 77 Nbfr over Bishop Channel

Fair

Nueces County, Texas · 0.50 MI S of FM 70 · Structure no. 161780010203063

Built
1970
55 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
152 ft
5 main spans
Daily traffic
1,981
2022 count
Owner
State
State Highway Agency

About this bridge

US 77 Nbfr over Bishop Channel is a concrete stringer/multi-beam or girder carrying US 77 Nbfr over Bishop Channel in Nueces County, Texas. It was built in 1970, so it is 55 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 1,981 vehicles a day, roughly 14% of them trucks, projected to reach 2,773 by 2042. The structure is 152 ft (46.3 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 77 Nbfr
CrossesBishop Channel
Location0.50 MI S of FM 70
RouteU.S. Route 77
CountyNueces County
StateTexas
Coordinates27.58562, -97.78526
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no 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 rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length152 ft (46.3 m)
Longest span30 ft (9.1 m)
Deck width44 ft (13.5 m)
Roadway width42 ft (12.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,981 (2022)
Projected traffic2,773 by 2042
Trucks14%
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 Nbfr over Bishop Channel built?

It was built in 1970, making it 55 years old in 2025.

What condition is US 77 Nbfr over Bishop Channel 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 Nbfr over Bishop Channel carry?

About 1,981 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is US 77 Nbfr over Bishop Channel?

The structure is 152 ft (46.3 m) long with a longest span of 30 ft (9.1 m) and a deck 44 ft wide.

Who owns US 77 Nbfr over Bishop Channel?

It is owned by the State Highway Agency.