US Bridges

FM 1099 & IH 37 FR over Drain

Good

Atascosa County, Texas · 0.05 MI W of IH 37 · Structure no. 150070074806171

Built
1976
49 years old
Condition
Good
inspected May 2024
Type
Culvert
Concrete
Length
55 ft
5 main spans
Daily traffic
210
2023 count
Owner
State
State Highway Agency

About this bridge

FM 1099 & IH 37 FR over Drain is a concrete culvert carrying FM 1099 & IH 37 FR over Drain 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 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 210 vehicles a day, roughly 35% of them trucks, projected to reach 1,280 by 2033. The structure is 55 ft (16.8 m) long. If it were closed, the detour would be 3.7 mi (6 km).

CarriesFM 1099 & IH 37 FR
CrossesDrain
Location0.05 MI W of IH 37
RouteState Highway 1099
StateTexas
Coordinates28.73356, -98.28981
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 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 evaluation6: Equal to present minimum criteria
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
DeckNot applicable
Main spans5
Design loadHS 20
Structure length55 ft (16.8 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 traffic210 (2023)
Projected traffic1,280 by 2033
Trucks35%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 FM 1099 & IH 37 FR over Drain built?

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

What condition is FM 1099 & IH 37 FR 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 May 2024.

How much traffic does FM 1099 & IH 37 FR over Drain carry?

About 210 vehicles per day (2023 count), of which roughly 35% are trucks.

How long is FM 1099 & IH 37 FR over Drain?

The structure is 55 ft (16.8 m) long with a longest span of 9 ft (2.7 m).

Who owns FM 1099 & IH 37 FR over Drain?

It is owned by the State Highway Agency.