US Bridges

Murphy over Swamp Creek

Fair

Darke County, Ohio · .31 MI E Cramer · Structure no. 1959832

Built
1971
54 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
64 ft
3 main spans
Daily traffic
664
2015 count
Owner
County
County Highway Agency

About this bridge

Murphy over Swamp Creek is a concrete continuous slab carrying Murphy over Swamp Creek in Darke County, Ohio. It was built in 1971, so it is 54 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 664 vehicles a day, roughly 8% of them trucks, projected to reach 922 by 2035. The structure is 64 ft (19.5 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMurphy
CrossesSwamp Creek
Location.31 MI E Cramer
RouteCounty Highway T0300
CountyDarke County
StateOhio
Coordinates40.2588, -84.46879
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating40 US tons
Inventory rating23.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length64 ft (19.5 m)
Longest span24 ft (7.3 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic664 (2015)
Projected traffic922 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 Murphy over Swamp Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is Murphy 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 October 2024.

How much traffic does Murphy over Swamp Creek carry?

About 664 vehicles per day (2015 count), of which roughly 8% are trucks.

How long is Murphy over Swamp Creek?

The structure is 64 ft (19.5 m) long with a longest span of 24 ft (7.3 m) and a deck 24 ft wide.

Who owns Murphy over Swamp Creek?

It is owned by the County Highway Agency.