US Bridges

Mill over Mill Race Greenville Cr.

Fair

Darke County, Ohio · .06 MI N Hahn · Structure no. 1946587

Built
1920
105 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
—
2015 count
Owner
County
County Highway Agency

About this bridge

Mill over Mill Race Greenville Cr. is a concrete slab carrying Mill over Mill Race Greenville Cr. in Darke County, Ohio. It was built in 1920, so it is 105 years old, older than the Ohio average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

No traffic count is recorded. The structure is 24 ft (7.3 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesMill
CrossesMill Race Greenville Cr.
Location.06 MI N Hahn
RouteCounty Highway T0385
StateOhio
Coordinates40.10722, -84.49944
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating45.7 US tons
Inventory rating27.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span21 ft (6.4 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic—
Projected traffic—
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 over Mill Race Greenville Cr. built?

It was built in 1920, making it 105 years old in 2025.

What condition is Mill over Mill Race Greenville Cr. in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.

How much traffic does Mill over Mill Race Greenville Cr. carry?

No traffic count is recorded for this structure.

How long is Mill over Mill Race Greenville Cr.?

The structure is 24 ft (7.3 m) long with a longest span of 21 ft (6.4 m) and a deck 20 ft wide.

Who owns Mill over Mill Race Greenville Cr.?

It is owned by the County Highway Agency.