US Bridges

Dunbar Road over Pitts Creek

Fair

Monroe County, Michigan · 0.5 MI E of Geiger Road · Structure no. 000000000007264

Built
1980
45 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
2,550
2016 count
Owner
County
County Highway Agency

About this bridge

Dunbar Road over Pitts Creek is a concrete culvert carrying Dunbar Road over Pitts Creek in Monroe County, Michigan. It was built in 1980, so it is 45 years old, younger 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 2,550 vehicles a day, roughly 1% of them trucks, projected to reach 2,932 by 2036. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesDunbar Road
CrossesPitts Creek
Location0.5 MI E of Geiger Road
RouteCounty Highway 5850
CountyMonroe County
StateMichigan
Coordinates41.91997, -83.53681
Functional classRural Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 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 alignment6: Equal to present minimum criteria
Operating rating60.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span10 ft (3.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,550 (2016)
Projected traffic2,932 by 2036
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 Dunbar Road over Pitts Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is Dunbar Road over Pitts 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 August 2024.

How much traffic does Dunbar Road over Pitts Creek carry?

About 2,550 vehicles per day (2016 count), of which roughly 1% are trucks.

How long is Dunbar Road over Pitts Creek?

The structure is 27 ft (8.2 m) long with a longest span of 10 ft (3.2 m).

Who owns Dunbar Road over Pitts Creek?

It is owned by the County Highway Agency.