US Bridges

KY-1422 over Unname Stream

Good

Marshall County, Kentucky · .25 MI N.W. of JCT US 641 · Structure no. 079B00052N

Built
1962
63 years old
Condition
Good
inspected June 2023
Type
Culvert
Concrete
Length
43 ft
2 main spans
Daily traffic
739
2021 count
Owner
State
State Highway Agency

About this bridge

KY-1422 over Unname Stream is a concrete culvert carrying KY-1422 over Unname Stream in Marshall County, Kentucky. It was built in 1962, so it is 63 years old, older 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 739 vehicles a day, projected to reach 739 by 2041. The structure is 43 ft (13.1 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesKY-1422
CrossesUnname Stream
Location.25 MI N.W. of JCT US 641
RouteState Highway 1422
CountyMarshall County
StateKentucky
Coordinates36.94722, -88.3225
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating44 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length43 ft (13.1 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic739 (2021)
Projected traffic739 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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-1422 over Unname Stream built?

It was built in 1962, making it 63 years old in 2025.

What condition is KY-1422 over Unname Stream 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 June 2023.

How much traffic does KY-1422 over Unname Stream carry?

About 739 vehicles per day (2021 count).

How long is KY-1422 over Unname Stream?

The structure is 43 ft (13.1 m) long with a longest span of 14 ft (4.3 m).

Who owns KY-1422 over Unname Stream?

It is owned by the State Highway Agency.