US Bridges

Jackson Road over Drain #73

Fair

Gratiot County, Michigan · Sec 30-31 Pine River Twp · Structure no. 000000000003235

Built
1985
40 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
33 ft
1 main span
Daily traffic
211
2004 count
Owner
County
County Highway Agency

About this bridge

Jackson Road over Drain #73 is a prestressed concrete box beam or girders - multiple carrying Jackson Road over Drain #73 in Gratiot County, Michigan. It was built in 1985, so it is 40 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 211 vehicles a day, roughly 7% of them trucks, projected to reach 255 by 2024. The structure is 33 ft (10 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesJackson Road
CrossesDrain #73
LocationSec 30-31 Pine River Twp
RouteCounty Highway 0
Coordinates43.39367, -84.71217
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating72.8 US tons
Inventory rating43.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length33 ft (10 m)
Longest span30 ft (9.1 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic211 (2004)
Projected traffic255 by 2024
Trucks7%
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 Jackson Road over Drain #73 built?

It was built in 1985, making it 40 years old in 2025.

What condition is Jackson Road over Drain #73 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 July 2024.

How much traffic does Jackson Road over Drain #73 carry?

About 211 vehicles per day (2004 count), of which roughly 7% are trucks.

How long is Jackson Road over Drain #73?

The structure is 33 ft (10 m) long with a longest span of 30 ft (9.1 m) and a deck 28 ft wide.

Who owns Jackson Road over Drain #73?

It is owned by the County Highway Agency.