Structure 5766826 · Montgomery County, OH

Northlawn AVE over Conrail Rr

Carries Northlawn AVE over Conrail Rr, 100 Feet West Of SR 741.

Overall conditionGood

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

How ratings work
Deck8/9 · Very 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 FT209 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

209 ft end to end, longest span 85 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 box-beam bridge.

Built1975rebuilt 2011
Length209.0 ft63.7 m
Daily traffic8,600counted 2010
Last inspectedJune 2023every 24 months

Location

StateOhio
CountyMontgomery
Location100 Feet West Of SR 741
CarriesNorthlawn AVE
CrossesConrail Rr
Coordinates39.70638, -84.21904

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length209.0 ft (63.7 m)
Max Span85.0 ft (25.9 m)
Deck Width37.1 ft (11.3 m)
Deck Area719.8 sq m
Main Spans3
Year Built1975 (reconstructed 2011)

Traffic

Avg Daily Traffic8,600 (2010)
Truck Traffic9%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number5766826

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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