US Bridges

Mahan Road over Harpes Creek

PoorPosted for load

Whitley County, Kentucky · .1 MI E of JCT Ky 92 · Structure no. 118C00015N

Built
1960
65 years old
Condition
Poor
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
30 ft
1 main span
Daily traffic
38
2022 count
Owner
County
County Highway Agency

About this bridge

Mahan Road over Harpes Creek is a steel stringer/multi-beam or girder carrying Mahan Road over Harpes Creek in Whitley County, Kentucky. It was built in 1960, so it is 65 years old, older than the Kentucky average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 38 vehicles a day, projected to reach 38 by 2042. The structure is 30 ft (9.1 m) long and 16 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesMahan Road
CrossesHarpes Creek
Location.1 MI E of JCT Ky 92
RouteCounty Highway 1198
CountyWhitley County
StateKentucky
Coordinates36.69472, -83.95944
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating5 US tons
Inventory rating3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span18 ft (5.5 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38 (2022)
Projected traffic38 by 2042
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$50,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mahan Road over Harpes Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Mahan Road over Harpes Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2024.

How much traffic does Mahan Road over Harpes Creek carry?

About 38 vehicles per day (2022 count).

How long is Mahan Road over Harpes Creek?

The structure is 30 ft (9.1 m) long with a longest span of 18 ft (5.5 m) and a deck 16 ft wide.

Who owns Mahan Road over Harpes Creek?

It is owned by the County Highway Agency.