US Bridges

IH 37 Wfr over Drain

Good

San Patricio County, Texas · 0.85 MI SE of SH 359 · Structure no. 162050007403122

Built
1971
54 years old
Condition
Good
inspected February 2024
Type
Culvert
Concrete
Length
22 ft
4 main spans
Daily traffic
396
2022 count
Owner
State
State Highway Agency

About this bridge

IH 37 Wfr over Drain is a concrete culvert carrying IH 37 Wfr over Drain in San Patricio County, Texas. It was built in 1971, so it is 54 years old, older 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 396 vehicles a day, roughly 3% of them trucks, projected to reach 554 by 2042. The structure is 22 ft (6.7 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIH 37 Wfr
CrossesDrain
Location0.85 MI SE of SH 359
RouteInterstate 37
StateTexas
Coordinates28.08972, -97.81039
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span5 ft (1.5 m)
Deck width41 ft (12.6 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic396 (2022)
Projected traffic554 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$51,000
NavigationNo navigation control on waterway

Frequently asked questions

When was IH 37 Wfr over Drain built?

It was built in 1971, making it 54 years old in 2025.

What condition is IH 37 Wfr over Drain 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 February 2024.

How much traffic does IH 37 Wfr over Drain carry?

About 396 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is IH 37 Wfr over Drain?

The structure is 22 ft (6.7 m) long with a longest span of 5 ft (1.5 m) and a deck 41 ft wide.

Who owns IH 37 Wfr over Drain?

It is owned by the State Highway Agency.