US Bridges

Swain RD over Seven Mile Creek

Good

Preble County, Ohio · .05 W of Ch 11 · Structure no. 6839371

Built
1900
125 years old, rebuilt 1994
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
71 ft
1 main span
Daily traffic
351
2015 count
Owner
County
County Highway Agency

About this bridge

Swain RD over Seven Mile Creek is a prestressed concrete box beam or girders - multiple carrying Swain RD over Seven Mile Creek in Preble County, Ohio. It was built in 1900 and reconstructed in 1994, so it is 125 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 351 vehicles a day, roughly 7% of them trucks, projected to reach 487 by 2035. The structure is 71 ft (21.6 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesSwain RD
CrossesSeven Mile Creek
Location.05 W of Ch 11
RouteCounty Highway T0133
StateOhio
Coordinates39.79746, -84.68611
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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
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 rating59 US tons
Inventory rating40.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length71 ft (21.6 m)
Longest span66 ft (20.1 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic351 (2015)
Projected traffic487 by 2035
Trucks7%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$68,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Swain RD over Seven Mile Creek built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1994.

What condition is Swain RD over Seven Mile Creek 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 Swain RD over Seven Mile Creek carry?

About 351 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is Swain RD over Seven Mile Creek?

The structure is 71 ft (21.6 m) long with a longest span of 66 ft (20.1 m) and a deck 24 ft wide.

Who owns Swain RD over Seven Mile Creek?

It is owned by the County Highway Agency.