US Bridges

12 Mile Road over Nottawassepee Creek

PoorPosted for load

Calhoun County, Michigan · 6 MI N of Burlington · Structure no. 000000000001363

Built
1919
106 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
21 ft
1 main span
Daily traffic
439
1994 count
Owner
County
County Highway Agency

About this bridge

12 Mile Road over Nottawassepee Creek is a steel stringer/multi-beam or girder carrying 12 Mile Road over Nottawassepee Creek in Calhoun County, Michigan. It was built in 1919, so it is 106 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 439 vehicles a day, roughly 5% of them trucks, projected to reach 819 by 2024. The structure is 21 ft (6.4 m) long and 25 ft wide. If it were closed, the detour would be 5 mi (8 km).

Carries12 Mile Road
CrossesNottawassepee Creek
Location6 MI N of Burlington
RouteCounty Highway 0
Coordinates42.19253, -85.06033
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
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 rating33.6 US tons
Inventory rating20 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width25 ft (7.6 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic439 (1994)
Projected traffic819 by 2024
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$212,000
NavigationNo navigation control on waterway

Frequently asked questions

When was 12 Mile Road over Nottawassepee Creek built?

It was built in 1919, making it 106 years old in 2025.

What condition is 12 Mile Road over Nottawassepee Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does 12 Mile Road over Nottawassepee Creek carry?

About 439 vehicles per day (1994 count), of which roughly 5% are trucks.

How long is 12 Mile Road over Nottawassepee Creek?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 25 ft wide.

Who owns 12 Mile Road over Nottawassepee Creek?

It is owned by the County Highway Agency.