US Bridges

KY-172 over Doc Isom Branch

Fair

Morgan County, Kentucky · .1 MI E of JCT Ky 1715 · Structure no. 088B00016N

Built
1949
76 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
825
2021 count
Owner
State
State Highway Agency

About this bridge

KY-172 over Doc Isom Branch is a concrete culvert carrying KY-172 over Doc Isom Branch in Morgan County, Kentucky. It was built in 1949, so it is 76 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 825 vehicles a day, roughly 13% of them trucks, projected to reach 825 by 2041. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesKY-172
CrossesDoc Isom Branch
Location.1 MI E of JCT Ky 1715
RouteState Highway 172
CountyMorgan County
StateKentucky
Coordinates37.97444, -83.04222
Functional classRural Major 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.5 US tons
Inventory rating51.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length27 ft (8.2 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic825 (2021)
Projected traffic825 by 2041
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 KY-172 over Doc Isom Branch built?

It was built in 1949, making it 76 years old in 2025.

What condition is KY-172 over Doc Isom 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 October 2024.

How much traffic does KY-172 over Doc Isom Branch carry?

About 825 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is KY-172 over Doc Isom Branch?

The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.7 m).

Who owns KY-172 over Doc Isom Branch?

It is owned by the State Highway Agency.