US Bridges

US 77 NB over UP RR

Good

Cameron County, Texas · 1.40 MI S of FM 1732 · Structure no. 210310003908294

Built
2000
25 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
240 ft
3 main spans
Daily traffic
42,884
2023 count
Owner
State
State Highway Agency

About this bridge

US 77 NB over UP RR is a prestressed concrete stringer/multi-beam or girder carrying US 77 NB over UP RR in Cameron County, Texas. It was built in 2000, so it is 25 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 42,884 vehicles a day, roughly 8% of them trucks, projected to reach 55,840 by 2031. The structure is 240 ft (73.2 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 77 NB
CrossesUP RR
Location1.40 MI S of FM 1732
RouteU.S. Route 77
StateTexas
Coordinates25.99726, -97.52536
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 geometry6: Equal to present minimum 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 spans3
Design loadHS 20
Structure length240 ft (73.2 m)
Longest span90 ft (27.4 m)
Deck width58 ft (17.7 m)
Roadway width56 ft (17 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42,884 (2023)
Projected traffic55,840 by 2031
Trucks8%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway 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 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 over UP RR built?

It was built in 2000, making it 25 years old in 2025.

What condition is US 77 NB over UP RR 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 over UP RR carry?

About 42,884 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is US 77 NB over UP RR?

The structure is 240 ft (73.2 m) long with a longest span of 90 ft (27.4 m) and a deck 58 ft wide.

Who owns US 77 NB over UP RR?

It is owned by the State Highway Agency.