US Bridges

USR-36 over Stillwater River

Good

Miami County, Ohio · 0.21 Mi. West of SR48 · Structure no. 5500036

Built
1940
85 years old, rebuilt 1988
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
225 ft
3 main spans
Daily traffic
7,920
2015 count
Owner
State
State Highway Agency

About this bridge

USR-36 over Stillwater River is a prestressed concrete continuous stringer/multi-beam or girder carrying USR-36 over Stillwater River in Miami County, Ohio. It was built in 1940 and reconstructed in 1988, so it is 85 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,920 vehicles a day, roughly 9% of them trucks, projected to reach 10,993 by 2035. The structure is 225 ft (68.6 m) long and 40 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesUSR-36
CrossesStillwater River
Location0.21 Mi. West of SR48
RouteU.S. Route 36
StateOhio
Coordinates40.12021, -84.35869
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating42.9 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length225 ft (68.6 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 traffic7,920 (2015)
Projected traffic10,993 by 2035
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 USR-36 over Stillwater River built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1988.

What condition is USR-36 over Stillwater 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 May 2024.

How much traffic does USR-36 over Stillwater River carry?

About 7,920 vehicles per day (2015 count), of which roughly 9% are trucks.

How long is USR-36 over Stillwater River?

The structure is 225 ft (68.6 m) long with a longest span of 85 ft (25.9 m) and a deck 40 ft wide.

Who owns USR-36 over Stillwater River?

It is owned by the State Highway Agency.