US Bridges

Grout RD over N Br Tobacco River

Fair

Gladwin County, Michigan · 4 1/2 Miles S of M61 · Structure no. 000000000002910

Built
1977
48 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete
Length
36 ft
2 main spans
Daily traffic
215
2000 count
Owner
County
County Highway Agency

About this bridge

Grout RD over N Br Tobacco River is a concrete culvert carrying Grout RD over N Br Tobacco River in Gladwin County, Michigan. It was built in 1977, so it is 48 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 215 vehicles a day, roughly 5% of them trucks, projected to reach 301 by 2020. The structure is 36 ft (10.9 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesGrout RD
CrossesN Br Tobacco River
Location4 1/2 Miles S of M61
RouteCounty Highway 0
CountyGladwin County
StateMichigan
Coordinates43.91688, -84.54513
Functional classRural Minor 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating107.1 US tons
Inventory rating75 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20 + Mod
Structure length36 ft (10.9 m)
Longest span16 ft (4.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic215 (2000)
Projected traffic301 by 2020
Trucks5%
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 Grout RD over N Br Tobacco River built?

It was built in 1977, making it 48 years old in 2025.

What condition is Grout RD over N Br Tobacco 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 March 2024.

How much traffic does Grout RD over N Br Tobacco River carry?

About 215 vehicles per day (2000 count), of which roughly 5% are trucks.

How long is Grout RD over N Br Tobacco River?

The structure is 36 ft (10.9 m) long with a longest span of 16 ft (4.8 m).

Who owns Grout RD over N Br Tobacco River?

It is owned by the County Highway Agency.