US Bridges

Piotter HWY over Swamp Raisin Drain

Fair

Lenawee County, Michigan · 0.1 MI S of Laberdee RD · Structure no. 000000000013279

Built
1974
51 years old
Condition
Fair
inspected February 2024
Type
Culvert
Steel
Length
26 ft
2 main spans
Daily traffic
155
2010 count
Owner
County
County Highway Agency

About this bridge

Piotter HWY over Swamp Raisin Drain is a steel culvert carrying Piotter HWY over Swamp Raisin Drain in Lenawee County, Michigan. It was built in 1974, so it is 51 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 5 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 155 vehicles a day, projected to reach 175 by 2031. The structure is 26 ft (8 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesPiotter HWY
CrossesSwamp Raisin Drain
Location0.1 MI S of Laberdee RD
RouteCounty Highway 0
CountyLenawee County
StateMichigan
Coordinates41.92089, -83.82369
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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating22.2 US tons
Inventory rating17.2 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadH 20
Structure length26 ft (8 m)
Longest span15 ft (4.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic155 (2010)
Projected traffic175 by 2031
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$300,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Piotter HWY over Swamp Raisin Drain built?

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

What condition is Piotter HWY over Swamp Raisin Drain 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 February 2024.

How much traffic does Piotter HWY over Swamp Raisin Drain carry?

About 155 vehicles per day (2010 count).

How long is Piotter HWY over Swamp Raisin Drain?

The structure is 26 ft (8 m) long with a longest span of 15 ft (4.5 m).

Who owns Piotter HWY over Swamp Raisin Drain?

It is owned by the County Highway Agency.