US Bridges

Calhoun RD over N Br of Tobacco R

Fair

Gladwin County, Michigan · 0.75 MI W of M18 · Structure no. 000000000002900

Built
1968
57 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
63 ft
1 main span
Daily traffic
440
2000 count
Owner
County
County Highway Agency

About this bridge

Calhoun RD over N Br of Tobacco R is a steel stringer/multi-beam or girder carrying Calhoun RD over N Br of Tobacco R in Gladwin County, Michigan. It was built in 1968, so it is 57 years old, older 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 5 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 440 vehicles a day, roughly 7% of them trucks, projected to reach 616 by 2020. The structure is 63 ft (19.2 m) long and 27 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCalhoun RD
CrossesN Br of Tobacco R
Location0.75 MI W of M18
RouteCounty Highway 2624
CountyGladwin County
StateMichigan
Coordinates43.90172, -84.52186
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.9 US tons
Inventory rating47.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length63 ft (19.2 m)
Longest span60 ft (18.2 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic440 (2000)
Projected traffic616 by 2020
Trucks7%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Calhoun RD over N Br of Tobacco R built?

It was built in 1968, making it 57 years old in 2025.

What condition is Calhoun RD over N Br of Tobacco R 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 Calhoun RD over N Br of Tobacco R carry?

About 440 vehicles per day (2000 count), of which roughly 7% are trucks.

How long is Calhoun RD over N Br of Tobacco R?

The structure is 63 ft (19.2 m) long with a longest span of 60 ft (18.2 m) and a deck 27 ft wide.

Who owns Calhoun RD over N Br of Tobacco R?

It is owned by the County Highway Agency.