Structure 7326939 · Scioto County, OH

Rt#108 over Lampblack Run

Carries Rt#108 over Lampblack Run, Shawnee State Forest.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating4/9 · Poor
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
22 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 4/9 · sets the rating

22 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a slab bridge.

Built1979rebuilt 1995
Length22.0 ft6.7 m
Daily traffic100counted 1990
Last inspectedJanuary 2025every 12 months

Location

StateOhio
CountyScioto
LocationShawnee State Forest
CarriesRt#108
CrossesLampblack Run
Coordinates38.73722, -83.19917

Physical Characteristics

MaterialWood or Timber
DesignSlab
Total Length22.0 ft (6.7 m)
Max Span21.3 ft (6.5 m)
Deck Width12.1 ft (3.7 m)
Deck Area24.8 sq m
Main Spans1
Year Built1979 (reconstructed 1995)

Traffic

Avg Daily Traffic100 (1990)
Lanes On Bridge1

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 12 months
OwnerState Park/Forest Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number7326939

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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