US Bridges

Seibt over Stillwater River

Good

Darke County, Ohio · .16 MI W Kelch · Structure no. 1959239

Built
1984
41 years old
Condition
Good
inspected October 2024
Type
Truss - Thru
Steel
Length
224 ft
1 main span
Daily traffic
307
2015 count
Owner
County
County Highway Agency

About this bridge

Seibt over Stillwater River is a steel truss - thru carrying Seibt over Stillwater River in Darke County, Ohio. It was built in 1984, so it is 41 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 307 vehicles a day, roughly 8% of them trucks, projected to reach 426 by 2035. The structure is 224 ft (68.3 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSeibt
CrossesStillwater River
Location.16 MI W Kelch
RouteCounty Highway C0168
CountyDarke County
StateOhio
Coordinates40.181, -84.46313
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating56.1 US tons
Inventory rating33.6 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+2 approach)
Design loadHS 20
Structure length224 ft (68.3 m)
Longest span140 ft (42.6 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic307 (2015)
Projected traffic426 by 2035
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Seibt over Stillwater River built?

It was built in 1984, making it 41 years old in 2025.

What condition is Seibt 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 October 2024.

How much traffic does Seibt over Stillwater River carry?

About 307 vehicles per day (2015 count), of which roughly 8% are trucks.

How long is Seibt over Stillwater River?

The structure is 224 ft (68.3 m) long with a longest span of 140 ft (42.6 m) and a deck 25 ft wide.

Who owns Seibt over Stillwater River?

It is owned by the County Highway Agency.