US Bridges

IH 37 NB over Draw

Good

Atascosa County, Texas · 2.75 MI N of SH 97 · Structure no. 150070007310236

Built
1979
46 years old
Condition
Good
inspected May 2024
Type
Culvert
Concrete
Length
50 ft
4 main spans
Daily traffic
14,500
2013 count
Owner
State
State Highway Agency

About this bridge

IH 37 NB over Draw is a concrete culvert carrying IH 37 NB over Draw in Atascosa County, Texas. It was built in 1979, so it is 46 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 14,500 vehicles a day, roughly 31% of them trucks, projected to reach 20,300 by 2033. The structure is 50 ft (15.2 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesIH 37 NB
CrossesDraw
Location2.75 MI N of SH 97
RouteInterstate 37
StateTexas
Coordinates29.03463, -98.43226
Functional classRural Principal Arterial - Interstate

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,500 (2013)
Projected traffic20,300 by 2033
Trucks31%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 IH 37 NB over Draw built?

It was built in 1979, making it 46 years old in 2025.

What condition is IH 37 NB over Draw 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 May 2024.

How much traffic does IH 37 NB over Draw carry?

About 14,500 vehicles per day (2013 count), of which roughly 31% are trucks.

How long is IH 37 NB over Draw?

The structure is 50 ft (15.2 m) long with a longest span of 10 ft (3 m).

Who owns IH 37 NB over Draw?

It is owned by the State Highway Agency.