US Bridges

SR-55 over Mad River

Good

Champaign County, Ohio · 1.13MI.E. of Jct. SR-560 · Structure no. 1101595

Built
1958
67 years old, rebuilt 2000
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
175 ft
3 main spans
Daily traffic
1,467
2015 count
Owner
State
State Highway Agency

About this bridge

SR-55 over Mad River is a steel continuous stringer/multi-beam or girder carrying SR-55 over Mad River in Champaign County, Ohio. It was built in 1958 and reconstructed in 2000, so it is 67 years old, older 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 1,467 vehicles a day, roughly 2% of them trucks, projected to reach 2,036 by 2035. The structure is 175 ft (53.3 m) long and 44 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesSR-55
CrossesMad River
Location1.13MI.E. of Jct. SR-560
RouteState Highway 55
StateOhio
Coordinates40.06819, -83.81064
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation8: Equal to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating58.5 US tons
Inventory rating45.3 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length175 ft (53.3 m)
Longest span65 ft (19.8 m)
Deck width44 ft (13.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,467 (2015)
Projected traffic2,036 by 2035
Trucks2%
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 SR-55 over Mad River built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2000.

What condition is SR-55 over Mad River 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 January 2024.

How much traffic does SR-55 over Mad River carry?

About 1,467 vehicles per day (2015 count), of which roughly 2% are trucks.

How long is SR-55 over Mad River?

The structure is 175 ft (53.3 m) long with a longest span of 65 ft (19.8 m) and a deck 44 ft wide.

Who owns SR-55 over Mad River?

It is owned by the State Highway Agency.