US Bridges

US-41 over Swamp Slough

Fair

Christian County, Kentucky · .60 MI N.W. of JCT Ky 115 · Structure no. 024B00025N

Built
1942
83 years old
Condition
Fair
inspected June 2021
Type
Culvert
Concrete
Length
29 ft
2 main spans
Daily traffic
5,809
2018 count
Owner
State
State Highway Agency

About this bridge

US-41 over Swamp Slough is a concrete culvert carrying US-41 over Swamp Slough in Christian County, Kentucky. It was built in 1942, so it is 83 years old, older than the Kentucky average of 46.6 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 5,809 vehicles a day, roughly 15% of them trucks, projected to reach 5,809 by 2038. The structure is 29 ft (8.8 m) long and 41 ft wide. If it were closed, the detour would be 21.1 mi (34 km).

Location

No coordinates are recorded for this structure.

CarriesUS-41
CrossesSwamp Slough
Location.60 MI N.W. of JCT Ky 115
RouteU.S. Route 41
CountyChristian County
StateKentucky
Functional classRural Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2021
Inspection intervalevery 48 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating45 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length29 ft (8.8 m)
Longest span14 ft (4.3 m)
Deck width41 ft (12.6 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,809 (2018)
Projected traffic5,809 by 2038
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.1 mi (34 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 US-41 over Swamp Slough built?

It was built in 1942, making it 83 years old in 2025.

What condition is US-41 over Swamp 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 June 2021.

How much traffic does US-41 over Swamp Slough carry?

About 5,809 vehicles per day (2018 count), of which roughly 15% are trucks.

How long is US-41 over Swamp Slough?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m) and a deck 41 ft wide.

Who owns US-41 over Swamp Slough?

It is owned by the State Highway Agency.