US Bridges

IH 20 & N FR over Slough

Fair

Eastland County, Texas · 1.40 MI E of Lp 254 · Structure no. 230680000706018

Built
1956
69 years old, rebuilt 1965
Condition
Fair
inspected February 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
25,223
2018 count
Owner
State
State Highway Agency

About this bridge

IH 20 & N FR over Slough is a concrete culvert carrying IH 20 & N FR over Slough in Eastland County, Texas. It was built in 1956 and reconstructed in 1965, so it is 69 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 25,223 vehicles a day, roughly 44% of them trucks, projected to reach 35,313 by 2038. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 16.8 mi (27 km).

Location

Open in Google Maps
CarriesIH 20 & N FR
CrossesSlough
Location1.40 MI E of Lp 254
RouteInterstate 20
CountyEastland County
StateTexas
Coordinates32.48055, -98.60228
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 inspectionFebruary 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 spans2
Design loadOther
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,223 (2018)
Projected traffic35,313 by 2038
Trucks44%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemYes
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 20 & N FR over Slough built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1965.

What condition is IH 20 & N FR over Slough 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 February 2024.

How much traffic does IH 20 & N FR over Slough carry?

About 25,223 vehicles per day (2018 count), of which roughly 44% are trucks.

How long is IH 20 & N FR over Slough?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns IH 20 & N FR over Slough?

It is owned by the State Highway Agency.