US Bridges

Green-St.Marys over Swamp Creek

Good

Darke County, Ohio · .4 MI N of Medford RD · Structure no. 1957201

Built
1993
32 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
90 ft
3 main spans
Daily traffic
500
2015 count
Owner
County
County Highway Agency

About this bridge

Green-St.Marys over Swamp Creek is a prestressed concrete box beam or girders - multiple carrying Green-St.Marys over Swamp Creek in Darke County, Ohio. It was built in 1993, so it is 32 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 500 vehicles a day, roughly 8% of them trucks, projected to reach 694 by 2035. The structure is 90 ft (27.4 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesGreen-St.Marys
CrossesSwamp Creek
Location.4 MI N of Medford RD
RouteCounty Highway C098D
CountyDarke County
StateOhio
Coordinates40.28971, -84.54957
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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.6 US tons
Inventory rating47.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHS 20 + Mod
Structure length90 ft (27.4 m)
Longest span40 ft (12.2 m)
Deck width32 ft (9.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2015)
Projected traffic694 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 Green-St.Marys over Swamp Creek built?

It was built in 1993, making it 32 years old in 2025.

What condition is Green-St.Marys over Swamp 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 September 2023.

How much traffic does Green-St.Marys over Swamp Creek carry?

About 500 vehicles per day (2015 count), of which roughly 8% are trucks.

How long is Green-St.Marys over Swamp Creek?

The structure is 90 ft (27.4 m) long with a longest span of 40 ft (12.2 m) and a deck 32 ft wide.

Who owns Green-St.Marys over Swamp Creek?

It is owned by the County Highway Agency.