US Bridges

US 77 SB over Louisiana Ave

Fair

Cameron County, Texas · 0.95 MI NW of FM 801 · Structure no. 210310003907310

Built
2004
21 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
188 ft
1 main span
Daily traffic
39,120
2011 count
Owner
State
State Highway Agency

About this bridge

US 77 SB over Louisiana Ave is a prestressed concrete stringer/multi-beam or girder carrying US 77 SB over Louisiana Ave in Cameron County, Texas. It was built in 2004, so it is 21 years old, younger 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 39,120 vehicles a day, roughly 7% of them trucks, projected to reach 54,770 by 2031. The structure is 188 ft (57.3 m) long and 71 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 77 SB
CrossesLouisiana Ave
Location0.95 MI NW of FM 801
RouteU.S. Route 77
CountyCameron County
StateTexas
Coordinates26.16836, -97.6946
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.
Superstructure7 GoodSome minor problems.
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

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 25 or greater
Structure length188 ft (57.3 m)
Longest span91 ft (27.7 m)
Deck width71 ft (21.6 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39,120 (2011)
Projected traffic54,770 by 2031
Trucks7%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 Louisiana Ave built?

It was built in 2004, making it 21 years old in 2025.

What condition is US 77 SB over Louisiana Ave 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 Louisiana Ave carry?

About 39,120 vehicles per day (2011 count), of which roughly 7% are trucks.

How long is US 77 SB over Louisiana Ave?

The structure is 188 ft (57.3 m) long with a longest span of 91 ft (27.7 m) and a deck 71 ft wide.

Who owns US 77 SB over Louisiana Ave?

It is owned by the State Highway Agency.