US Bridges

US 281 over Main Floodway

Good

Hidalgo County, Texas · 3.30 MI S of Bus 83 · Structure no. 211090025509092

Built
2000
25 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
2,946 ft
27 main spans
Daily traffic
14,253
2020 count
Owner
State
State Highway Agency

About this bridge

US 281 over Main Floodway is a prestressed concrete stringer/multi-beam or girder carrying US 281 over Main Floodway in Hidalgo 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 14,253 vehicles a day, roughly 19% of them trucks, projected to reach 28,510 by 2033. The structure is 2,946 ft (897.9 m) long and 79 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesUS 281
CrossesMain Floodway
Location3.30 MI S of Bus 83
RouteU.S. Route 281
StateTexas
Coordinates26.14733, -98.19199
Functional classUrban Other Principal Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
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
DeckConcrete, precast panels
Main spans27 (+3 approach)
Design loadHS 25 or greater
Structure length2,946 ft (897.9 m)
Longest span118 ft (36 m)
Deck width79 ft (24 m)
Roadway width74 ft (22.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,253 (2020)
Projected traffic28,510 by 2033
Trucks19%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 281 over Main Floodway built?

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

What condition is US 281 over Main Floodway 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 April 2023.

How much traffic does US 281 over Main Floodway carry?

About 14,253 vehicles per day (2020 count), of which roughly 19% are trucks.

How long is US 281 over Main Floodway?

The structure is 2,946 ft (897.9 m) long with a longest span of 118 ft (36 m) and a deck 79 ft wide.

Who owns US 281 over Main Floodway?

It is owned by the State Highway Agency.