Structure 5709733 · Montgomery County, OH

Ir70 over I70

Carries Ir70 over I70, Intersection Ir70.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT236 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

236 ft end to end, longest span 119 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 multi-beam bridge.

Built198739 years old
Length235.9 ft71.9 m
Daily traffic7,064counted 2015
Last inspectedAugust 2023every 24 months

Location

StateOhio
CountyMontgomery
LocationIntersection Ir70
CarriesIr70
CrossesI70
Coordinates39.86499, -84.05549

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length235.9 ft (71.9 m)
Max Span119.1 ft (36.3 m)
Deck Width53.8 ft (16.4 m)
Deck Area1179.2 sq m
Main Spans2
Year Built1987

Traffic

Avg Daily Traffic7,064 (2015)
Truck Traffic10%
Lanes On Bridge3
Lanes Under Bridge9

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number5709733

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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