US Bridges

US 77 SB over BUS77 UPRR & Primera RD

Fair

Cameron County, Texas · 1.10 MI N of FM 2994 · Structure no. 210310003907124

Built
1967
58 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,204 ft
4 main spans
Daily traffic
10,110
2011 count
Owner
State
State Highway Agency

About this bridge

US 77 SB over BUS77 UPRR & Primera RD is a steel continuous stringer/multi-beam or girder carrying US 77 SB over BUS77 UPRR & Primera RD in Cameron County, Texas. It was built in 1967, so it is 58 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 10,110 vehicles a day, roughly 22% of them trucks, projected to reach 14,150 by 2031. The structure is 1,204 ft (367 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 77 SB
CrossesBUS77 UPRR & Primera RD
Location1.10 MI N of FM 2994
RouteU.S. Route 77
CountyCameron County
StateTexas
Coordinates26.22762, -97.72121
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+20 approach)
Design loadHS 20
Structure length1,204 ft (367 m)
Longest span108 ft (32.9 m)
Deck width35 ft (10.7 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,110 (2011)
Projected traffic14,150 by 2031
Trucks22%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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 BUS77 UPRR & Primera RD built?

It was built in 1967, making it 58 years old in 2025.

What condition is US 77 SB over BUS77 UPRR & Primera RD 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 March 2023.

How much traffic does US 77 SB over BUS77 UPRR & Primera RD carry?

About 10,110 vehicles per day (2011 count), of which roughly 22% are trucks.

How long is US 77 SB over BUS77 UPRR & Primera RD?

The structure is 1,204 ft (367 m) long with a longest span of 108 ft (32.9 m) and a deck 35 ft wide.

Who owns US 77 SB over BUS77 UPRR & Primera RD?

It is owned by the State Highway Agency.