US Bridges

Oak Leaf RD #106 over Flat Run Creek

Good

Highland County, Ohio · 1.10MILESFROMCO# · Structure no. 3631982

Built
1975
50 years old, rebuilt 1990
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
44 ft
1 main span
Daily traffic
324
2015 count
Owner
County
County Highway Agency

About this bridge

Oak Leaf RD #106 over Flat Run Creek is a steel stringer/multi-beam or girder carrying Oak Leaf RD #106 over Flat Run Creek in Highland County, Ohio. It was built in 1975 and reconstructed in 1990, so it is 50 years old, older than the Ohio average of 47.3 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 324 vehicles a day, roughly 7% of them trucks, projected to reach 450 by 2035. The structure is 44 ft (13.4 m) long and 21 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesOak Leaf RD #106
CrossesFlat Run Creek
Location1.10MILESFROMCO#
RouteCounty Highway 106
StateOhio
Coordinates39.02991, -83.84299
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length44 ft (13.4 m)
Longest span42 ft (12.8 m)
Deck width21 ft (6.5 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic324 (2015)
Projected traffic450 by 2035
Trucks7%
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

OwnerCounty Highway Agency
Maintained byCounty 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 Oak Leaf RD #106 over Flat Run Creek built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 1990.

What condition is Oak Leaf RD #106 over Flat Run Creek 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 March 2024.

How much traffic does Oak Leaf RD #106 over Flat Run Creek carry?

About 324 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is Oak Leaf RD #106 over Flat Run Creek?

The structure is 44 ft (13.4 m) long with a longest span of 42 ft (12.8 m) and a deck 21 ft wide.

Who owns Oak Leaf RD #106 over Flat Run Creek?

It is owned by the County Highway Agency.