US Bridges

US-131 NB over Bog

Fair

Wexford County, Michigan · Haring Twp Sec 15 · Structure no. 000000000012998

Built
2000
25 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
244 ft
3 main spans
Daily traffic
3,575
2007 count
Owner
State
State Highway Agency

About this bridge

US-131 NB over Bog is a prestressed concrete stringer/multi-beam or girder carrying US-131 NB over Bog in Wexford County, Michigan. It was built in 2000, so it is 25 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 3,575 vehicles a day, roughly 11% of them trucks, projected to reach 3,796 by 2018. The structure is 244 ft (74.3 m) long and 52 ft wide.

Location

Open in Google Maps
CarriesUS-131 NB
CrossesBog
LocationHaring Twp Sec 15
RouteU.S. Route 131
CountyWexford County
StateMichigan
Coordinates44.29973, -85.39216
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating83.6 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length244 ft (74.3 m)
Longest span144 ft (43.8 m)
Deck width52 ft (16 m)
Roadway width49 ft (15 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,575 (2007)
Projected traffic3,796 by 2018
Trucks11%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US-131 NB over Bog built?

It was built in 2000, making it 25 years old in 2025.

What condition is US-131 NB over Bog 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 June 2024.

How much traffic does US-131 NB over Bog carry?

About 3,575 vehicles per day (2007 count), of which roughly 11% are trucks.

How long is US-131 NB over Bog?

The structure is 244 ft (74.3 m) long with a longest span of 144 ft (43.8 m) and a deck 52 ft wide.

Who owns US-131 NB over Bog?

It is owned by the State Highway Agency.