US Bridges

SR-47 over Miami River

Fair

Logan County, Ohio · 1.54MI.E.OF Jct. SR-235 · Structure no. 4601297

Built
1952
73 years old, rebuilt 1993
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
226 ft
3 main spans
Daily traffic
1,791
2015 count
Owner
State
State Highway Agency

About this bridge

SR-47 over Miami River is a steel continuous stringer/multi-beam or girder carrying SR-47 over Miami River in Logan County, Ohio. It was built in 1952 and reconstructed in 1993, so it is 73 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,791 vehicles a day, roughly 14% of them trucks, projected to reach 2,486 by 2035. The structure is 226 ft (68.9 m) long and 40 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesSR-47
CrossesMiami River
Location1.54MI.E.OF Jct. SR-235
RouteState Highway 47
CountyLogan County
StateOhio
Coordinates40.34332, -83.93502
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length226 ft (68.9 m)
Longest span85 ft (25.9 m)
Deck width40 ft (12.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,791 (2015)
Projected traffic2,486 by 2035
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$215,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SR-47 over Miami River built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1993.

What condition is SR-47 over Miami River 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 March 2024.

How much traffic does SR-47 over Miami River carry?

About 1,791 vehicles per day (2015 count), of which roughly 14% are trucks.

How long is SR-47 over Miami River?

The structure is 226 ft (68.9 m) long with a longest span of 85 ft (25.9 m) and a deck 40 ft wide.

Who owns SR-47 over Miami River?

It is owned by the State Highway Agency.