US Bridges

Afton Road over Pigeon River

PoorPosted for load

Cheboygan County, Michigan · Between Sec 1&2 T34NR2W · Structure no. 000000000001529

Built
1982
43 years old
Condition
Poor
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
119 ft
2 main spans
Daily traffic
500
2005 count
Owner
County
County Highway Agency

About this bridge

Afton Road over Pigeon River is a prestressed concrete box beam or girders - multiple carrying Afton Road over Pigeon River in Cheboygan 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 poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 500 vehicles a day, projected to reach 900 by 2025. The structure is 119 ft (36.2 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesAfton Road
CrossesPigeon River
LocationBetween Sec 1&2 T34NR2W
RouteCounty Highway 1641
Coordinates45.36406, -84.50735
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating30 US tons
Inventory rating7.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length119 ft (36.2 m)
Longest span60 ft (18.2 m)
Deck width31 ft (9.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2005)
Projected traffic900 by 2025
Trucks0%
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 Afton Road over Pigeon River built?

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

What condition is Afton Road over Pigeon River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does Afton Road over Pigeon River carry?

About 500 vehicles per day (2005 count).

How long is Afton Road over Pigeon River?

The structure is 119 ft (36.2 m) long with a longest span of 60 ft (18.2 m) and a deck 31 ft wide.

Who owns Afton Road over Pigeon River?

It is owned by the County Highway Agency.