US Bridges

Vassar Road over Hobart or Br 3 NW Drain

Good

Tuscola County, Michigan · Sec 31 Fairgrove Twp · Structure no. 000000000010500

Built
1971
54 years old
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
27 ft
1 main span
Daily traffic
1,000
2009 count
Owner
County
County Highway Agency

About this bridge

Vassar Road over Hobart or Br 3 NW Drain is a prestressed concrete box beam or girders - multiple carrying Vassar Road over Hobart or Br 3 NW Drain in Tuscola County, Michigan. It was built in 1971, so it is 54 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.

It carries about 1,000 vehicles a day, projected to reach 1,805 by 2029. The structure is 27 ft (8.2 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesVassar Road
CrossesHobart or Br 3 NW Drain
LocationSec 31 Fairgrove Twp
RouteCounty Highway 7921
Coordinates43.48626, -83.58183
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 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
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.5 US tons
Inventory rating57.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span25 ft (7.5 m)
Deck width36 ft (11.1 m)
Roadway width35 ft (10.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2009)
Projected traffic1,805 by 2029
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 Vassar Road over Hobart or Br 3 NW Drain built?

It was built in 1971, making it 54 years old in 2025.

What condition is Vassar Road over Hobart or Br 3 NW Drain 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 May 2023.

How much traffic does Vassar Road over Hobart or Br 3 NW Drain carry?

About 1,000 vehicles per day (2009 count).

How long is Vassar Road over Hobart or Br 3 NW Drain?

The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.5 m) and a deck 36 ft wide.

Who owns Vassar Road over Hobart or Br 3 NW Drain?

It is owned by the County Highway Agency.