US Bridges

RT#108 over Lampblack Run

Poor

Scioto County, Ohio · Shawnee State Forest · Structure no. 7326939

Built
1979
46 years old, rebuilt 1995
Condition
Poor
inspected January 2025
Type
Slab
Wood or Timber
Length
22 ft
1 main span
Daily traffic
100
1990 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

RT#108 over Lampblack Run is a wood or timber slab carrying RT#108 over Lampblack Run in Scioto County, Ohio. It was built in 1979 and reconstructed in 1995, so it is 46 years old, younger than the Ohio average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 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.

It carries about 100 vehicles a day, projected to reach 139 by 2010. The structure is 22 ft (6.7 m) long and 12 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesRT#108
CrossesLampblack Run
LocationShawnee State Forest
RouteFederal Lands Road 35
CountyScioto County
StateOhio
Coordinates38.73722, -83.19917
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2025
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.4 US tons
Inventory rating32.2 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span21 ft (6.5 m)
Deck width12 ft (3.7 m)
Roadway width10 ft (3.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (1990)
Projected traffic139 by 2010
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation 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 RT#108 over Lampblack Run built?

It was built in 1979, making it 46 years old in 2025. It was reconstructed in 1995.

What condition is RT#108 over Lampblack Run 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 January 2025.

How much traffic does RT#108 over Lampblack Run carry?

About 100 vehicles per day (1990 count).

How long is RT#108 over Lampblack Run?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.5 m) and a deck 12 ft wide.

Who owns RT#108 over Lampblack Run?

It is owned by the State Park, Forest, or Reservation Agency.