US Bridges

US 77 NB on Ramp over US 77 NB Off Ramp

Good

Cameron County, Texas · 0.20 MI S of SH 48 · Structure no. 210310003916379

Built
2006
19 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
550 ft
5 main spans
Daily traffic
6,280
2017 count
Owner
State
State Highway Agency

About this bridge

US 77 NB on Ramp over US 77 NB Off Ramp is a prestressed concrete stringer/multi-beam or girder carrying US 77 NB on Ramp over US 77 NB Off Ramp in Cameron County, Texas. It was built in 2006, so it is 19 years old, younger 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 6,280 vehicles a day, roughly 8% of them trucks, projected to reach 10,040 by 2037. The structure is 550 ft (167.6 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 77 NB on Ramp
CrossesUS 77 NB Off Ramp
Location0.20 MI S of SH 48
RouteU.S. Route 77
StateTexas
Coordinates25.91805, -97.49061
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 25 or greater
Structure length550 ft (167.6 m)
Longest span112 ft (34.1 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,280 (2017)
Projected traffic10,040 by 2037
Trucks8%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 77 NB on Ramp over US 77 NB Off Ramp built?

It was built in 2006, making it 19 years old in 2025.

What condition is US 77 NB on Ramp over US 77 NB Off Ramp 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 March 2023.

How much traffic does US 77 NB on Ramp over US 77 NB Off Ramp carry?

About 6,280 vehicles per day (2017 count), of which roughly 8% are trucks.

How long is US 77 NB on Ramp over US 77 NB Off Ramp?

The structure is 550 ft (167.6 m) long with a longest span of 112 ft (34.1 m) and a deck 28 ft wide.

Who owns US 77 NB on Ramp over US 77 NB Off Ramp?

It is owned by the State Highway Agency.