US Bridges

Belsay Road over Thread River

Good

Genesee County, Michigan · Bet Perry & Hill Road · Structure no. 000000000002750

Built
1928
97 years old, rebuilt 2021
Condition
Good
inspected November 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
31 ft
1 main span
Daily traffic
7,162
2020 count
Owner
County
County Highway Agency

About this bridge

Belsay Road over Thread River is a prestressed concrete box beam or girders - single or spread carrying Belsay Road over Thread River in Genesee County, Michigan. It was built in 1928 and reconstructed in 2021, so it is 97 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,162 vehicles a day, roughly 8% of them trucks, projected to reach 10,643 by 2040. The structure is 31 ft (9.4 m) long and 31 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

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CarriesBelsay Road
CrossesThread River
LocationBet Perry & Hill Road
RouteCounty Highway 2002
CountyGenesee County
StateMichigan
Coordinates42.93584, -83.59732
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.8 US tons
Inventory rating70.8 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length31 ft (9.4 m)
Longest span30 ft (9.1 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,162 (2020)
Projected traffic10,643 by 2040
Trucks8%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$61,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Belsay Road over Thread River built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 2021.

What condition is Belsay Road over Thread 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 November 2023.

How much traffic does Belsay Road over Thread River carry?

About 7,162 vehicles per day (2020 count), of which roughly 8% are trucks.

How long is Belsay Road over Thread River?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9.1 m) and a deck 31 ft wide.

Who owns Belsay Road over Thread River?

It is owned by the County Highway Agency.