US Bridges

Blair Road over Bush Creek Drain

Fair

Gratiot County, Michigan · Sec 13-14 Bethany Twp · Structure no. 000000000003174

Built
1996
29 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
375
2003 count
Owner
County
County Highway Agency

About this bridge

Blair Road over Bush Creek Drain is a prestressed concrete box beam or girders - multiple carrying Blair Road over Bush Creek Drain in Gratiot County, Michigan. It was built in 1996, so it is 29 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 6 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 375 vehicles a day, projected to reach 510 by 2023. The structure is 60 ft (18.2 m) long and 37 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesBlair Road
CrossesBush Creek Drain
LocationSec 13-14 Bethany Twp
RouteCounty Highway 0
CountyGratiot County
StateMichigan
Coordinates43.43032, -84.50836
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.3 US tons
Inventory rating57.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length60 ft (18.2 m)
Longest span56 ft (17 m)
Deck width37 ft (11.4 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic375 (2003)
Projected traffic510 by 2023
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Blair Road over Bush Creek Drain built?

It was built in 1996, making it 29 years old in 2025.

What condition is Blair Road over Bush Creek Drain 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 May 2023.

How much traffic does Blair Road over Bush Creek Drain carry?

About 375 vehicles per day (2003 count).

How long is Blair Road over Bush Creek Drain?

The structure is 60 ft (18.2 m) long with a longest span of 56 ft (17 m) and a deck 37 ft wide.

Who owns Blair Road over Bush Creek Drain?

It is owned by the County Highway Agency.