US Bridges

Mill Run Crossing over Wirthman Ditch

Good

Delaware County, Ohio · 0.1 MI S. of US36/37 · Structure no. 2160951

Built
2008
17 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete
Length
22 ft
1 main span
Daily traffic
2,500
2008 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mill Run Crossing over Wirthman Ditch is a concrete culvert carrying Mill Run Crossing over Wirthman Ditch in Delaware County, Ohio. It was built in 2008, so it is 17 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 2,500 vehicles a day, roughly 10% of them trucks, projected to reach 3,470 by 2028. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMill Run Crossing
CrossesWirthman Ditch
Location0.1 MI S. of US36/37
RouteCity Street MILLR
CountyDelaware County
StateOhio
Coordinates40.29305, -83.03894
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating39.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20 + Mod
Structure length22 ft (6.7 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2008)
Projected traffic3,470 by 2028
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mill Run Crossing over Wirthman Ditch built?

It was built in 2008, making it 17 years old in 2025.

What condition is Mill Run Crossing over Wirthman Ditch 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 November 2023.

How much traffic does Mill Run Crossing over Wirthman Ditch carry?

About 2,500 vehicles per day (2008 count), of which roughly 10% are trucks.

How long is Mill Run Crossing over Wirthman Ditch?

The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.1 m).

Who owns Mill Run Crossing over Wirthman Ditch?

It is owned by the City or Municipal Highway Agency.