US Bridges

Old Port Isabel RD over Main Drain Ditch #2

Good

Cameron County, Texas · 1.5 MI SW of JCT SH 100 · Structure no. 210310AA0179001

Built
1998
27 years old
Condition
Good
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
100 ft
1 main span
Daily traffic
10
2014 count
Owner
County
County Highway Agency

About this bridge

Old Port Isabel RD over Main Drain Ditch #2 is a prestressed concrete box beam or girders - multiple carrying Old Port Isabel RD over Main Drain Ditch #2 in Cameron County, Texas. It was built in 1998, so it is 27 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 10 vehicles a day, roughly 3% of them trucks, projected to reach 158 by 2042. The structure is 100 ft (30.5 m) long and 35 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesOld Port Isabel RD
CrossesMain Drain Ditch #2
Location1.5 MI SW of JCT SH 100
RouteCounty Highway 0
StateTexas
Coordinates26.04925, -97.39795
Functional classRural Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum 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 length100 ft (30.5 m)
Longest span99 ft (30.1 m)
Deck width35 ft (10.8 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2014)
Projected traffic158 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Old Port Isabel RD over Main Drain Ditch #2 built?

It was built in 1998, making it 27 years old in 2025.

What condition is Old Port Isabel RD over Main Drain Ditch #2 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 2024.

How much traffic does Old Port Isabel RD over Main Drain Ditch #2 carry?

About 10 vehicles per day (2014 count), of which roughly 3% are trucks.

How long is Old Port Isabel RD over Main Drain Ditch #2?

The structure is 100 ft (30.5 m) long with a longest span of 99 ft (30.1 m) and a deck 35 ft wide.

Who owns Old Port Isabel RD over Main Drain Ditch #2?

It is owned by the County Highway Agency.