US Bridges

Ky 420 over Cedar Run

Fair

Franklin County, Kentucky · 1 MI N of US 127 · Structure no. 037B00012N

Built
1932
93 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
4,922
2023 count
Owner
State
State Highway Agency

About this bridge

Ky 420 over Cedar Run is a concrete culvert carrying Ky 420 over Cedar Run in Franklin County, Kentucky. It was built in 1932, so it is 93 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 5 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 4,922 vehicles a day, projected to reach 4,922 by 2043. The structure is 21 ft (6.4 m) long and 78 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesKy 420
CrossesCedar Run
Location1 MI N of US 127
RouteState Highway 420
CountyFranklin County
StateKentucky
Coordinates38.15333, -84.88222
Functional classUrban 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width78 ft (23.8 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,922 (2023)
Projected traffic4,922 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Ky 420 over Cedar Run built?

It was built in 1932, making it 93 years old in 2025.

What condition is Ky 420 over Cedar Run 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 July 2024.

How much traffic does Ky 420 over Cedar Run carry?

About 4,922 vehicles per day (2023 count).

How long is Ky 420 over Cedar Run?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 78 ft wide.

Who owns Ky 420 over Cedar Run?

It is owned by the State Highway Agency.