US Bridges

US 77 SB over FM 425

Fair

Kleberg County, Texas · 1.2 MI S of SH 141 · Structure no. 161370010204093

Built
1988
37 years old
Condition
Fair
inspected June 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
400 ft
4 main spans
Daily traffic
7,330
2020 count
Owner
State
State Highway Agency

About this bridge

US 77 SB over FM 425 is a prestressed concrete stringer/multi-beam or girder carrying US 77 SB over FM 425 in Kleberg County, Texas. It was built in 1988, so it is 37 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 7,330 vehicles a day, roughly 16% of them trucks, projected to reach 14,280 by 2033. The structure is 400 ft (121.9 m) long and 40 ft wide.

CarriesUS 77 SB
CrossesFM 425
Location1.2 MI S of SH 141
RouteU.S. Route 77
StateTexas
Coordinates27.49884, -97.84258
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 inspectionJune 2022
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

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length400 ft (121.9 m)
Longest span100 ft (30.5 m)
Deck width40 ft (12.2 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,330 (2020)
Projected traffic14,280 by 2033
Trucks16%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 FM 425 built?

It was built in 1988, making it 37 years old in 2025.

What condition is US 77 SB over FM 425 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 June 2022.

How much traffic does US 77 SB over FM 425 carry?

About 7,330 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is US 77 SB over FM 425?

The structure is 400 ft (121.9 m) long with a longest span of 100 ft (30.5 m) and a deck 40 ft wide.

Who owns US 77 SB over FM 425?

It is owned by the State Highway Agency.