US Bridges

US-41A over Rock Ridge Branch

Fair

Christian County, Kentucky · Sbl 1 MI Sou of JCT KY161 · Structure no. 024B00029R

Built
1957
68 years old
Condition
Fair
inspected June 2021
Type
Tee Beam
Concrete
Length
86 ft
2 main spans
Daily traffic
4,815
2022 count
Owner
State
State Highway Agency

About this bridge

US-41A over Rock Ridge Branch is a concrete tee beam carrying US-41A over Rock Ridge Branch in Christian County, Kentucky. It was built in 1957, so it is 68 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 4,815 vehicles a day, roughly 11% of them trucks, projected to reach 4,815 by 2042. The structure is 86 ft (26.2 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS-41A
CrossesRock Ridge Branch
LocationSbl 1 MI Sou of JCT KY161
RouteU.S. Route 41
CountyChristian County
StateKentucky
Coordinates36.79417, -87.47333
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
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 geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82 US tons
Inventory rating49.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length86 ft (26.2 m)
Longest span40 ft (12.2 m)
Deck width40 ft (12.3 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,815 (2022)
Projected traffic4,815 by 2042
Trucks11%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US-41A over Rock Ridge Branch built?

It was built in 1957, making it 68 years old in 2025.

What condition is US-41A over Rock Ridge Branch 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-41A over Rock Ridge Branch carry?

About 4,815 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is US-41A over Rock Ridge Branch?

The structure is 86 ft (26.2 m) long with a longest span of 40 ft (12.2 m) and a deck 40 ft wide.

Who owns US-41A over Rock Ridge Branch?

It is owned by the State Highway Agency.