Structure 5700906 · Montgomery County, OH

Sr-4 over C51(harshman Road)

Carries Sr-4 over C51(harshman Road), 1.25mi.sw. Of Jct. Sr-444.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT201 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

201 ft end to end, longest span 52 ft: about 3 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. 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.

Built195967 years old
Length201.1 ft61.3 m
Daily traffic9,895counted 2015
Last inspectedSeptember 2024every 12 months

Location

StateOhio
CountyMontgomery
Location1.25mi.sw. Of Jct. Sr-444
CarriesSr-4
CrossesC51(harshman Road)
Coordinates39.79309, -84.12792

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length201.1 ft (61.3 m)
Max Span52.2 ft (15.9 m)
Deck Width63.6 ft (19.4 m)
Deck Area1189.2 sq m
Main Spans4
Year Built1959

Traffic

Avg Daily Traffic9,895 (2015)
Truck Traffic9%
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number5700906

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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