US Bridges

Heythaler HWY over Trout River

Good

Presque Isle County, Michigan · 2 MI West of US-23 · Structure no. 000000000008974

Built
1995
30 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
28 ft
1 main span
Daily traffic
510
2007 count
Owner
County
County Highway Agency

About this bridge

Heythaler HWY over Trout River is a concrete culvert carrying Heythaler HWY over Trout River in Presque Isle County, Michigan. It was built in 1995, so it is 30 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 510 vehicles a day, projected to reach 867 by 2027. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesHeythaler HWY
CrossesTrout River
Location2 MI West of US-23
RouteCounty Highway 0
CountyPresque Isle County
StateMichigan
Coordinates45.3739, -83.8525
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span28 ft (8.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic510 (2007)
Projected traffic867 by 2027
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 Heythaler HWY over Trout River built?

It was built in 1995, making it 30 years old in 2025.

What condition is Heythaler HWY over Trout River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does Heythaler HWY over Trout River carry?

About 510 vehicles per day (2007 count).

How long is Heythaler HWY over Trout River?

The structure is 28 ft (8.5 m) long with a longest span of 28 ft (8.5 m).

Who owns Heythaler HWY over Trout River?

It is owned by the County Highway Agency.