US Bridges

Harshman Road over Conrail RR

Good

Montgomery County, Ohio · .6 MI S of SR4 · Structure no. 5770777

Built
1998
27 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
156 ft
3 main spans
Daily traffic
25,278
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Harshman Road over Conrail RR is a steel continuous stringer/multi-beam or girder carrying Harshman Road over Conrail RR in Montgomery County, Ohio. It was built in 1998, so it is 27 years old, younger than the Ohio average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 25,278 vehicles a day, roughly 5% of them trucks, projected to reach 35,086 by 2038. The structure is 156 ft (47.7 m) long and 93 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesHarshman Road
CrossesConrail RR
Location.6 MI S of SR4
RouteCounty Highway C0074
StateOhio
Coordinates39.78525, -84.12017
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating46.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length156 ft (47.7 m)
Longest span59 ft (18.1 m)
Deck width93 ft (28.4 m)
Roadway width83 ft (25.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,278 (2018)
Projected traffic35,086 by 2038
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Harshman Road over Conrail RR built?

It was built in 1998, making it 27 years old in 2025.

What condition is Harshman Road over Conrail RR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does Harshman Road over Conrail RR carry?

About 25,278 vehicles per day (2018 count), of which roughly 5% are trucks.

How long is Harshman Road over Conrail RR?

The structure is 156 ft (47.7 m) long with a longest span of 59 ft (18.1 m) and a deck 93 ft wide.

Who owns Harshman Road over Conrail RR?

It is owned by the City or Municipal Highway Agency.