US Bridges

US 421 over Mccamon Cr.

Good

Jackson County, Kentucky · Gray Hawk Jackson Co. · Structure no. 055B00044N

Built
2008
17 years old
Condition
Good
inspected February 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
42 ft
1 main span
Daily traffic
2,754
2021 count
Owner
State
State Highway Agency

About this bridge

US 421 over Mccamon Cr. is a steel stringer/multi-beam or girder carrying US 421 over Mccamon Cr. in Jackson County, Kentucky. It was built in 2008, so it is 17 years old, younger than the Kentucky average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,754 vehicles a day, roughly 13% of them trucks, projected to reach 2,754 by 2041. The structure is 42 ft (12.7 m) long and 43 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesUS 421
CrossesMccamon Cr.
LocationGray Hawk Jackson Co.
RouteU.S. Route 421
CountyJackson County
StateKentucky
Coordinates37.40083, -83.94889
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating74.3 US tons
Inventory rating57.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length42 ft (12.7 m)
Longest span42 ft (12.7 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,754 (2021)
Projected traffic2,754 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 421 over Mccamon Cr. built?

It was built in 2008, making it 17 years old in 2025.

What condition is US 421 over Mccamon Cr. in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2022.

How much traffic does US 421 over Mccamon Cr. carry?

About 2,754 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is US 421 over Mccamon Cr.?

The structure is 42 ft (12.7 m) long with a longest span of 42 ft (12.7 m) and a deck 43 ft wide.

Who owns US 421 over Mccamon Cr.?

It is owned by the State Highway Agency.