US Bridges

Laberdee Road over Swamp Raisin Drain

Fair

Lenawee County, Michigan · 0.1 MI E of Piotter HWY · Structure no. 000000000005622

Built
1989
36 years old
Condition
Fair
inspected February 2024
Type
Slab
Wood or Timber
Length
36 ft
2 main spans
Daily traffic
57
2011 count
Owner
County
County Highway Agency

About this bridge

Laberdee Road over Swamp Raisin Drain is a wood or timber slab carrying Laberdee Road over Swamp Raisin Drain in Lenawee County, Michigan. It was built in 1989, so it is 36 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 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 57 vehicles a day, roughly 1% of them trucks, projected to reach 100 by 2031. The structure is 36 ft (10.9 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLaberdee Road
CrossesSwamp Raisin Drain
Location0.1 MI E of Piotter HWY
RouteCounty Highway 0
CountyLenawee County
StateMichigan
Coordinates41.92173, -83.82057
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being 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 rating52.6 US tons
Inventory rating38.3 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadHS 20
Structure length36 ft (10.9 m)
Longest span16 ft (4.9 m)
Deck width25 ft (7.7 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic57 (2011)
Projected traffic100 by 2031
Trucks1%
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 Laberdee Road over Swamp Raisin Drain built?

It was built in 1989, making it 36 years old in 2025.

What condition is Laberdee Road 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 Laberdee Road over Swamp Raisin Drain carry?

About 57 vehicles per day (2011 count), of which roughly 1% are trucks.

How long is Laberdee Road over Swamp Raisin Drain?

The structure is 36 ft (10.9 m) long with a longest span of 16 ft (4.9 m) and a deck 25 ft wide.

Who owns Laberdee Road over Swamp Raisin Drain?

It is owned by the County Highway Agency.