US Bridges

Martinsville Road over Swan Creek

Fair

Monroe County, Michigan · 0.1 MI South of Colf RD · Structure no. 000000000007352

Built
1976
49 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
129
2003 count
Owner
County
County Highway Agency

About this bridge

Martinsville Road over Swan Creek is a concrete culvert carrying Martinsville Road over Swan Creek in Monroe County, Michigan. It was built in 1976, so it is 49 years old, older than the Michigan average of 48.3 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 129 vehicles a day, roughly 3% of them trucks, projected to reach 210 by 2023. The structure is 23 ft (6.9 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesMartinsville Road
CrossesSwan Creek
Location0.1 MI South of Colf RD
RouteCounty Highway 0
CountyMonroe County
StateMichigan
Coordinates42.07175, -83.46122
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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating107.1 US tons
Inventory rating78.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length23 ft (6.9 m)
Longest span10 ft (2.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic129 (2003)
Projected traffic210 by 2023
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Martinsville Road over Swan Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is Martinsville Road over Swan 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 June 2024.

How much traffic does Martinsville Road over Swan Creek carry?

About 129 vehicles per day (2003 count), of which roughly 3% are trucks.

How long is Martinsville Road over Swan Creek?

The structure is 23 ft (6.9 m) long with a longest span of 10 ft (2.9 m).

Who owns Martinsville Road over Swan Creek?

It is owned by the County Highway Agency.