US Bridges

County RD 7 over Three Mile Run

Poor

Madison County, Ohio · 4.56 MI N of County Line · Structure no. 4932501

Built
1920
105 years old
Condition
Poor
inspected January 2025
Type
Arch - Deck
Concrete
Length
27 ft
1 main span
Daily traffic
3,334
2015 count
Owner
County
County Highway Agency

About this bridge

County RD 7 over Three Mile Run is a concrete arch - deck carrying County RD 7 over Three Mile Run in Madison 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 3,334 vehicles a day, roughly 7% of them trucks, projected to reach 4,628 by 2035. The structure is 27 ft (8.2 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCounty RD 7
CrossesThree Mile Run
Location4.56 MI N of County Line
RouteCounty Highway 7
CountyMadison County
StateOhio
Coordinates40.01785, -83.26193
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating82.1 US tons
Inventory rating50 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckOther
Main spans1
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span24 ft (7.3 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,334 (2015)
Projected traffic4,628 by 2035
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 County RD 7 over Three Mile Run built?

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

What condition is County RD 7 over Three Mile Run in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2025.

How much traffic does County RD 7 over Three Mile Run carry?

About 3,334 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is County RD 7 over Three Mile Run?

The structure is 27 ft (8.2 m) long with a longest span of 24 ft (7.3 m) and a deck 24 ft wide.

Who owns County RD 7 over Three Mile Run?

It is owned by the County Highway Agency.