US Bridges

IH 37 SB On-Ramp over Draw

Fair

Atascosa County, Texas · 0.02 MI S of FM 1099 · Structure no. 150070007306175

Built
1976
49 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete
Length
56 ft
5 main spans
Daily traffic
110
2010 count
Owner
State
State Highway Agency

About this bridge

IH 37 SB On-Ramp over Draw is a concrete culvert carrying IH 37 SB On-Ramp over Draw in Atascosa County, Texas. It was built in 1976, so it is 49 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 110 vehicles a day, roughly 3% of them trucks, projected to reach 160 by 2030. The structure is 56 ft (17.1 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIH 37 SB On-Ramp
CrossesDraw
Location0.02 MI S of FM 1099
RouteInterstate 37
StateTexas
Coordinates28.73331, -98.28971
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
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 spans5
Design loadHS 20
Structure length56 ft (17.1 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2010)
Projected traffic160 by 2030
Trucks3%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was IH 37 SB On-Ramp over Draw built?

It was built in 1976, making it 49 years old in 2025.

What condition is IH 37 SB On-Ramp over Draw in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does IH 37 SB On-Ramp over Draw carry?

About 110 vehicles per day (2010 count), of which roughly 3% are trucks.

How long is IH 37 SB On-Ramp over Draw?

The structure is 56 ft (17.1 m) long with a longest span of 9 ft (2.7 m).

Who owns IH 37 SB On-Ramp over Draw?

It is owned by the State Highway Agency.