US Bridges

Loop 1604 over Draw

Good

Bexar County, Texas · 0.4 MI NW of FM 2790 · Structure no. 150150202002007

Built
1973
52 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete
Length
30 ft
4 main spans
Daily traffic
6,325
2020 count
Owner
State
State Highway Agency

About this bridge

Loop 1604 over Draw is a concrete culvert carrying Loop 1604 over Draw in Bexar County, Texas. It was built in 1973, so it is 52 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 6,325 vehicles a day, roughly 11% of them trucks, projected to reach 7,400 by 2033. The structure is 30 ft (9.1 m) long. If it were closed, the detour would be 6.8 mi (11 km).

CarriesLoop 1604
CrossesDraw
Location0.4 MI NW of FM 2790
RouteState Highway 1604
StateTexas
Coordinates29.23544, -98.66004
Functional classUrban Minor Arterial

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 inspectionAugust 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 length30 ft (9.1 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,325 (2020)
Projected traffic7,400 by 2033
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Loop 1604 over Draw built?

It was built in 1973, making it 52 years old in 2025.

What condition is Loop 1604 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 August 2024.

How much traffic does Loop 1604 over Draw carry?

About 6,325 vehicles per day (2020 count), of which roughly 11% are trucks.

How long is Loop 1604 over Draw?

The structure is 30 ft (9.1 m) long with a longest span of 7 ft (2.1 m).

Who owns Loop 1604 over Draw?

It is owned by the State Highway Agency.