US Bridges

Eby Road over Pinnebog River

GoodPosted for load

Huron County, Michigan · Sec. 15 Oliver Twp. · Structure no. 000000000003632

Built
1958
67 years old, rebuilt 1978
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
43 ft
1 main span
Daily traffic
50
2007 count
Owner
County
County Highway Agency

About this bridge

Eby Road over Pinnebog River is a steel stringer/multi-beam or girder carrying Eby Road over Pinnebog River in Huron County, Michigan. It was built in 1958 and reconstructed in 1978, so it is 67 years old, older 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. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, projected to reach 90 by 2027. The structure is 43 ft (13 m) long and 28 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesEby Road
CrossesPinnebog River
LocationSec. 15 Oliver Twp.
RouteCounty Highway 0
Coordinates43.81139, -83.16535
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating42.1 US tons
Inventory rating25.4 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length43 ft (13 m)
Longest span43 ft (13 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2007)
Projected traffic90 by 2027
Trucks0%
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 Eby Road over Pinnebog River built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1978.

What condition is Eby Road over Pinnebog 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 Eby Road over Pinnebog River carry?

About 50 vehicles per day (2007 count).

How long is Eby Road over Pinnebog River?

The structure is 43 ft (13 m) long with a longest span of 43 ft (13 m) and a deck 28 ft wide.

Who owns Eby Road over Pinnebog River?

It is owned by the County Highway Agency.