US Bridges

Mangen over Swamp Creek

Fair

Darke County, Ohio · .05 MI N Medford · Structure no. 1956639

Built
1974
51 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
44 ft
1 main span
Daily traffic
477
2015 count
Owner
County
County Highway Agency

About this bridge

Mangen over Swamp Creek is a prestressed concrete box beam or girders - multiple carrying Mangen over Swamp Creek in Darke County, Ohio. It was built in 1974, so it is 51 years old, older than the Ohio average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 477 vehicles a day, roughly 8% of them trucks, projected to reach 662 by 2035. The structure is 44 ft (13.4 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMangen
CrossesSwamp Creek
Location.05 MI N Medford
RouteCounty Highway C0054
CountyDarke County
StateOhio
Coordinates40.28202, -84.53296
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.7 US tons
Inventory rating32.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span41 ft (12.5 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic477 (2015)
Projected traffic662 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mangen over Swamp Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is Mangen over Swamp Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does Mangen over Swamp Creek carry?

About 477 vehicles per day (2015 count), of which roughly 8% are trucks.

How long is Mangen over Swamp Creek?

The structure is 44 ft (13.4 m) long with a longest span of 41 ft (12.5 m) and a deck 24 ft wide.

Who owns Mangen over Swamp Creek?

It is owned by the County Highway Agency.