US Bridges

US 77 SB over Tyler Harrison Rvsc RR

Good

Cameron County, Texas · 0.40 MI S of Spur 54 · Structure no. 210310003907361

Built
2007
18 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,321 ft
17 main spans
Daily traffic
19,955
2023 count
Owner
State
State Highway Agency

About this bridge

US 77 SB over Tyler Harrison Rvsc RR is a prestressed concrete stringer/multi-beam or girder carrying US 77 SB over Tyler Harrison Rvsc RR in Cameron County, Texas. It was built in 2007, so it is 18 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 19,955 vehicles a day, roughly 19% of them trucks, projected to reach 28,400 by 2031. The structure is 1,321 ft (402.6 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 77 SB
CrossesTyler Harrison Rvsc RR
Location0.40 MI S of Spur 54
RouteU.S. Route 77
CountyCameron County
StateTexas
Coordinates26.19003, -97.71801
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans17
Design loadHL 93
Structure length1,321 ft (402.6 m)
Longest span91 ft (27.7 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,955 (2023)
Projected traffic28,400 by 2031
Trucks19%
Lanes on structure2
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 SB over Tyler Harrison Rvsc RR built?

It was built in 2007, making it 18 years old in 2025.

What condition is US 77 SB over Tyler Harrison Rvsc 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 SB over Tyler Harrison Rvsc RR carry?

About 19,955 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is US 77 SB over Tyler Harrison Rvsc RR?

The structure is 1,321 ft (402.6 m) long with a longest span of 91 ft (27.7 m) and a deck 40 ft wide.

Who owns US 77 SB over Tyler Harrison Rvsc RR?

It is owned by the State Highway Agency.