US Bridges

Young over Stillwater River

Good

Darke County, Ohio · .4 MI S Brock-Cosmos · Structure no. 1950304

Built
1950
75 years old, rebuilt 2007
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
35 ft
1 main span
Daily traffic
119
2015 count
Owner
County
County Highway Agency

About this bridge

Young over Stillwater River is a prestressed concrete box beam or girders - multiple carrying Young over Stillwater River in Darke County, Ohio. It was built in 1950 and reconstructed in 2007, so it is 75 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 119 vehicles a day, roughly 8% of them trucks, projected to reach 165 by 2035. The structure is 35 ft (10.7 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesYoung
CrossesStillwater River
Location.4 MI S Brock-Cosmos
RouteCounty Highway C0065
StateOhio
Coordinates40.26209, -84.72839
Functional classRural Local

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 protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating92.5 US tons
Inventory rating55.3 US tons

Structure

MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHS 20 + Mod
Structure length35 ft (10.7 m)
Longest span33 ft (10.1 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic119 (2015)
Projected traffic165 by 2035
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$54.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Young over Stillwater River built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2007.

What condition is Young 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 August 2023.

How much traffic does Young over Stillwater River carry?

About 119 vehicles per day (2015 count), of which roughly 8% are trucks.

How long is Young over Stillwater River?

The structure is 35 ft (10.7 m) long with a longest span of 33 ft (10.1 m) and a deck 28 ft wide.

Who owns Young over Stillwater River?

It is owned by the County Highway Agency.