US Bridges

Academy RD over River Raisin

Fair

Lenawee County, Michigan · 1.5 MI E of Adrian · Structure no. 000000000005682

Built
1982
43 years old
Condition
Fair
inspected March 2024
Type
Slab
Wood or Timber
Length
132 ft
6 main spans
Daily traffic
349
2011 count
Owner
County
County Highway Agency

About this bridge

Academy RD over River Raisin is a wood or timber slab carrying Academy RD over River Raisin in Lenawee County, Michigan. It was built in 1982, so it is 43 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 349 vehicles a day, roughly 1% of them trucks, projected to reach 550 by 2031. The structure is 132 ft (40.2 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesAcademy RD
CrossesRiver Raisin
Location1.5 MI E of Adrian
RouteCounty Highway 0
CountyLenawee County
StateMichigan
Coordinates41.90481, -83.98042
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating63.3 US tons
Inventory rating45.6 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans6
Design loadHS 20
Structure length132 ft (40.2 m)
Longest span22 ft (6.7 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic349 (2011)
Projected traffic550 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 Academy RD over River Raisin built?

It was built in 1982, making it 43 years old in 2025.

What condition is Academy RD over River Raisin 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 March 2024.

How much traffic does Academy RD over River Raisin carry?

About 349 vehicles per day (2011 count), of which roughly 1% are trucks.

How long is Academy RD over River Raisin?

The structure is 132 ft (40.2 m) long with a longest span of 22 ft (6.7 m) and a deck 30 ft wide.

Who owns Academy RD over River Raisin?

It is owned by the County Highway Agency.