US Bridges

FM 457 over Intracoastal Waterway

Fair

Matagorda County, Texas · 8.20 MI S of FM 2611 · Structure no. 131580060501080

Built
2021
4 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
2,365 ft
3 main spans
Daily traffic
638
2023 count
Owner
State
State Highway Agency

About this bridge

FM 457 over Intracoastal Waterway is a prestressed concrete continuous stringer/multi-beam or girder carrying FM 457 over Intracoastal Waterway in Matagorda County, Texas. It was built in 2021, so it is 4 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 638 vehicles a day, roughly 13% of them trucks, projected to reach 1,263 by 2042. The structure is 2,365 ft (720.9 m) long and 50 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesFM 457
CrossesIntracoastal Waterway
Location8.20 MI S of FM 2611
RouteState Highway 457
StateTexas
Coordinates28.77121, -95.61693
Functional classRural Major Collector

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans3 (+39 approach)
Design loadHL 93
Structure length2,365 ft (720.9 m)
Longest span300 ft (91.4 m)
Deck width50 ft (15.2 m)
Roadway width48 ft (14.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic638 (2023)
Projected traffic1,263 by 2042
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 457 over Intracoastal Waterway built?

It was built in 2021, making it 4 years old in 2025.

What condition is FM 457 over Intracoastal Waterway 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 December 2024.

How much traffic does FM 457 over Intracoastal Waterway carry?

About 638 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is FM 457 over Intracoastal Waterway?

The structure is 2,365 ft (720.9 m) long with a longest span of 300 ft (91.4 m) and a deck 50 ft wide.

Who owns FM 457 over Intracoastal Waterway?

It is owned by the State Highway Agency.