US Bridges

Pioneer Road over Platte River

Fair

Benzie County, Michigan · Homestead Twp Sec 15 · Structure no. 000000000013521

Built
1950
75 years old
Condition
Fair
inspected August 2023
Type
Culvert
Steel
Length
34 ft
2 main spans
Daily traffic
1,050
2008 count
Owner
County
County Highway Agency

About this bridge

Pioneer Road over Platte River is a steel culvert carrying Pioneer Road over Platte River in Benzie 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 fair condition with a lowest component rating of 5 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 1,050 vehicles a day, roughly 5% of them trucks, projected to reach 1,842 by 2026. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesPioneer Road
CrossesPlatte River
LocationHomestead Twp Sec 15
RouteCounty Highway 677
CountyBenzie County
StateMichigan
Coordinates44.64708, -85.99053
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.8 US tons
Inventory rating44 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadH 20
Structure length34 ft (10.4 m)
Longest span14 ft (4.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,050 (2008)
Projected traffic1,842 by 2026
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 Pioneer Road over Platte River built?

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

What condition is Pioneer Road over Platte 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 2023.

How much traffic does Pioneer Road over Platte River carry?

About 1,050 vehicles per day (2008 count), of which roughly 5% are trucks.

How long is Pioneer Road over Platte River?

The structure is 34 ft (10.4 m) long with a longest span of 14 ft (4.2 m).

Who owns Pioneer Road over Platte River?

It is owned by the County Highway Agency.