US Bridges

N Oceana DR(OLD31) over N Br Pentwater River

Fair

Oceana County, Michigan · 2.5 MI N of S JCT US-31BS · Structure no. 000000000008322

Built
1953
72 years old, rebuilt 2001
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
130 ft
3 main spans
Daily traffic
2,200
2006 count
Owner
County
County Highway Agency

About this bridge

N Oceana DR(OLD31) over N Br Pentwater River is a steel stringer/multi-beam or girder carrying N Oceana DR(OLD31) over N Br Pentwater River in Oceana County, Michigan. It was built in 1953 and reconstructed in 2001, so it is 72 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 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 2,200 vehicles a day, roughly 7% of them trucks, projected to reach 1,665 by 2015. The structure is 130 ft (39.6 m) long and 47 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesN Oceana DR(OLD31)
CrossesN Br Pentwater River
Location2.5 MI N of S JCT US-31BS
RouteCounty Highway 0
CountyOceana County
StateMichigan
Coordinates43.79522, -86.35884
Functional classRural Principal Arterial - Other

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.
Substructure7 GoodSome minor problems.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating104.6 US tons
Inventory rating62.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span50 ft (15.2 m)
Deck width47 ft (14.2 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,200 (2006)
Projected traffic1,665 by 2015
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 N Oceana DR(OLD31) over N Br Pentwater River built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 2001.

What condition is N Oceana DR(OLD31) over N Br Pentwater River 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 August 2024.

How much traffic does N Oceana DR(OLD31) over N Br Pentwater River carry?

About 2,200 vehicles per day (2006 count), of which roughly 7% are trucks.

How long is N Oceana DR(OLD31) over N Br Pentwater River?

The structure is 130 ft (39.6 m) long with a longest span of 50 ft (15.2 m) and a deck 47 ft wide.

Who owns N Oceana DR(OLD31) over N Br Pentwater River?

It is owned by the County Highway Agency.