US Bridges

104th Ave over S Branch Pentwater River

Poor

Oceana County, Michigan · 0.25 Mile S of Lever RD · Structure no. 000000000008395

Built
1950
75 years old
Condition
Poor
inspected August 2024
Type
Culvert
Steel
Length
41 ft
6 main spans
Daily traffic
150
2005 count
Owner
County
County Highway Agency

About this bridge

104th Ave over S Branch Pentwater River is a steel culvert carrying 104th Ave over S Branch Pentwater River in Oceana County, Michigan. It was built in 1950, so it is 75 years old, older 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 4 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.

It carries about 150 vehicles a day, roughly 5% of them trucks, projected to reach 250 by 2025. The structure is 41 ft (12.5 m) long. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
Carries104th Ave
CrossesS Branch Pentwater River
Location0.25 Mile S of Lever RD
RouteCounty Highway 0
CountyOceana County
StateMichigan
Coordinates43.72058, -86.29794
Functional classRural Local

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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans6
Design loadH 20
Structure length41 ft (12.5 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2005)
Projected traffic250 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 104th Ave over S Branch Pentwater River built?

It was built in 1950, making it 75 years old in 2025.

What condition is 104th Ave over S Branch Pentwater 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 August 2024.

How much traffic does 104th Ave over S Branch Pentwater River carry?

About 150 vehicles per day (2005 count), of which roughly 5% are trucks.

How long is 104th Ave over S Branch Pentwater River?

The structure is 41 ft (12.5 m) long with a longest span of 6 ft (1.8 m).

Who owns 104th Ave over S Branch Pentwater River?

It is owned by the County Highway Agency.