US Bridges

FM 1788 over Drain

Good

Midland County, Texas · 1.80 MI N of IH 20 · Structure no. 061650171807003

Built
1988
37 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
28 ft
5 main spans
Daily traffic
3,079
2020 count
Owner
State
State Highway Agency

About this bridge

FM 1788 over Drain is a concrete culvert carrying FM 1788 over Drain in Midland County, Texas. It was built in 1988, so it is 37 years old, younger 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 3,079 vehicles a day, roughly 16% of them trucks, projected to reach 10,870 by 2037. The structure is 28 ft (8.5 m) long and 73 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesFM 1788
CrossesDrain
Location1.80 MI N of IH 20
RouteState Highway 1788
StateTexas
Coordinates31.93481, -102.22751
Functional classRural Principal Arterial - Other

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 inspectionOctober 2023
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 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
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span5 ft (1.5 m)
Deck width73 ft (22.1 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,079 (2020)
Projected traffic10,870 by 2037
Trucks16%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

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 FM 1788 over Drain built?

It was built in 1988, making it 37 years old in 2025.

What condition is FM 1788 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 October 2023.

How much traffic does FM 1788 over Drain carry?

About 3,079 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is FM 1788 over Drain?

The structure is 28 ft (8.5 m) long with a longest span of 5 ft (1.5 m) and a deck 73 ft wide.

Who owns FM 1788 over Drain?

It is owned by the State Highway Agency.