US Bridges

FM 510 over Drainage Ditch

Good

Cameron County, Texas · 1.90 MI W of FM 803 · Structure no. 210310105703023

Built
1995
30 years old
Condition
Good
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
55 ft
1 main span
Daily traffic
6,787
2024 count
Owner
State
State Highway Agency

About this bridge

FM 510 over Drainage Ditch is a prestressed concrete box beam or girders - multiple carrying FM 510 over Drainage Ditch in Cameron County, Texas. It was built in 1995, so it is 30 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 6,787 vehicles a day, roughly 25% of them trucks, projected to reach 8,340 by 2033. The structure is 55 ft (16.8 m) long and 42 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesFM 510
CrossesDrainage Ditch
Location1.90 MI W of FM 803
RouteState Highway 510
StateTexas
Coordinates26.13684, -97.54837
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
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, cast-in-place
Main spans1
Design loadHS 20
Structure length55 ft (16.8 m)
Longest span55 ft (16.8 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,787 (2024)
Projected traffic8,340 by 2033
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 510 over Drainage Ditch built?

It was built in 1995, making it 30 years old in 2025.

What condition is FM 510 over Drainage Ditch 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 FM 510 over Drainage Ditch carry?

About 6,787 vehicles per day (2024 count), of which roughly 25% are trucks.

How long is FM 510 over Drainage Ditch?

The structure is 55 ft (16.8 m) long with a longest span of 55 ft (16.8 m) and a deck 42 ft wide.

Who owns FM 510 over Drainage Ditch?

It is owned by the State Highway Agency.