US Bridges

FM 1788 over IH 20

Fair

Midland County, Texas · At JCT of IH 20 & FM 1788 · Structure no. 061650000514161

Built
1965
60 years old, rebuilt 1985
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
222 ft
2 main spans
Daily traffic
15,784
2022 count
Owner
State
State Highway Agency

About this bridge

FM 1788 over IH 20 is a prestressed concrete stringer/multi-beam or girder carrying FM 1788 over IH 20 in Midland County, Texas. It was built in 1965 and reconstructed in 1985, so it is 60 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 15,784 vehicles a day, roughly 17% of them trucks, projected to reach 22,338 by 2042. The structure is 222 ft (67.7 m) long and 70 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesFM 1788
CrossesIH 20
LocationAt JCT of IH 20 & FM 1788
RouteState Highway 1788
StateTexas
Coordinates31.91135, -102.21543
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating30 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length222 ft (67.7 m)
Longest span65 ft (19.8 m)
Deck width70 ft (21.3 m)
Roadway width67 ft (20.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,784 (2022)
Projected traffic22,338 by 2042
Trucks17%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was FM 1788 over IH 20 built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1985.

What condition is FM 1788 over IH 20 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 August 2023.

How much traffic does FM 1788 over IH 20 carry?

About 15,784 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is FM 1788 over IH 20?

The structure is 222 ft (67.7 m) long with a longest span of 65 ft (19.8 m) and a deck 70 ft wide.

Who owns FM 1788 over IH 20?

It is owned by the State Highway Agency.