US Bridges

Riddle Fork RD over Riddle Branch

FairPosted for load

Rowan County, Kentucky · .25 MI S of JCT Ky 1167 · Structure no. 103C00020N

Built
1950
75 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
38 ft
2 main spans
Daily traffic
165
2009 count
Owner
County
County Highway Agency

About this bridge

Riddle Fork RD over Riddle Branch is a steel stringer/multi-beam or girder carrying Riddle Fork RD over Riddle Branch in Rowan County, Kentucky. It was built in 1950, so it is 75 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. Its operating status is: posted for load restriction.

It carries about 165 vehicles a day, projected to reach 165 by 2029. The structure is 38 ft (11.6 m) long and 16 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesRiddle Fork RD
CrossesRiddle Branch
Location.25 MI S of JCT Ky 1167
RouteCounty Highway 1104
CountyRowan County
StateKentucky
Coordinates38.15528, -83.37861
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.6 US tons
Inventory rating20.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length38 ft (11.6 m)
Longest span17 ft (5.2 m)
Deck width16 ft (4.9 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic165 (2009)
Projected traffic165 by 2029
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$67,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Riddle Fork RD over Riddle Branch built?

It was built in 1950, making it 75 years old in 2025.

What condition is Riddle Fork RD over Riddle 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 April 2024.

How much traffic does Riddle Fork RD over Riddle Branch carry?

About 165 vehicles per day (2009 count).

How long is Riddle Fork RD over Riddle Branch?

The structure is 38 ft (11.6 m) long with a longest span of 17 ft (5.2 m) and a deck 16 ft wide.

Who owns Riddle Fork RD over Riddle Branch?

It is owned by the County Highway Agency.