US Bridges

Weaver Road over Pinnebog River

Fair

Huron County, Michigan · Sec. 18 Hume Twp. · Structure no. 000000000003606

Built
1981
44 years old
Condition
Fair
inspected August 2023
Type
Tee Beam
Prestressed Concrete
Length
113 ft
3 main spans
Daily traffic
90
2009 count
Owner
County
County Highway Agency

About this bridge

Weaver Road over Pinnebog River is a prestressed concrete tee beam carrying Weaver Road over Pinnebog River in Huron County, Michigan. It was built in 1981, so it is 44 years old, younger 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 90 vehicles a day, projected to reach 160 by 2029. The structure is 113 ft (34.4 m) long and 32 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesWeaver Road
CrossesPinnebog River
LocationSec. 18 Hume Twp.
RouteCounty Highway 0
CountyHuron County
StateMichigan
Coordinates43.98495, -83.11507
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating78.9 US tons
Inventory rating47.3 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length113 ft (34.4 m)
Longest span36 ft (11 m)
Deck width32 ft (9.9 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2009)
Projected traffic160 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Weaver Road over Pinnebog River built?

It was built in 1981, making it 44 years old in 2025.

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

About 90 vehicles per day (2009 count).

How long is Weaver Road over Pinnebog River?

The structure is 113 ft (34.4 m) long with a longest span of 36 ft (11 m) and a deck 32 ft wide.

Who owns Weaver Road over Pinnebog River?

It is owned by the County Highway Agency.