US Bridges

SR29 over Dun Ditch

Good

Madison County, Ohio · 1.06 Miles N of SR38 · Structure no. 4900228

Built
2022
3 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
63 ft
1 main span
Daily traffic
3,500
2021 count
Owner
State
State Highway Agency

About this bridge

SR29 over Dun Ditch is a steel stringer/multi-beam or girder carrying SR29 over Dun Ditch in Madison County, Ohio. It was built in 2022, so it is 3 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,500 vehicles a day, roughly 9% of them trucks, projected to reach 3,500 by 2041. The structure is 63 ft (19.2 m) long and 40 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesSR29
CrossesDun Ditch
Location1.06 Miles N of SR38
RouteState Highway 29
CountyMadison County
StateOhio
Coordinates39.98546, -83.40365
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation9: Superior to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.5 US tons
Inventory rating45.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length63 ft (19.2 m)
Longest span61 ft (18.6 m)
Deck width40 ft (12.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,500 (2021)
Projected traffic3,500 by 2041
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SR29 over Dun Ditch built?

It was built in 2022, making it 3 years old in 2025.

What condition is SR29 over Dun 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 December 2024.

How much traffic does SR29 over Dun Ditch carry?

About 3,500 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is SR29 over Dun Ditch?

The structure is 63 ft (19.2 m) long with a longest span of 61 ft (18.6 m) and a deck 40 ft wide.

Who owns SR29 over Dun Ditch?

It is owned by the State Highway Agency.