US Bridges

River RD over Coldwater River

Poor

Isabella County, Michigan · 0.4 MI E of S Woodruff RD · Structure no. 000000000014405

Built
1964
61 years old
Condition
Poor
inspected April 2024
Type
Culvert
Steel
Length
24 ft
2 main spans
Daily traffic
1,637
2014 count
Owner
County
County Highway Agency

About this bridge

River RD over Coldwater River is a steel culvert carrying River RD over Coldwater River in Isabella County, Michigan. It was built in 1964, so it is 61 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 4 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.

It carries about 1,637 vehicles a day, roughly 2% of them trucks, projected to reach 1,997 by 2034. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesRiver RD
CrossesColdwater River
Location0.4 MI E of S Woodruff RD
RouteCounty Highway 0
CountyIsabella County
StateMichigan
Coordinates43.6251, -84.9596
Functional classRural Major Collector

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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.1 US tons
Inventory rating24.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span11 ft (3.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,637 (2014)
Projected traffic1,997 by 2034
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 River RD over Coldwater River built?

It was built in 1964, making it 61 years old in 2025.

What condition is River RD over Coldwater River 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 April 2024.

How much traffic does River RD over Coldwater River carry?

About 1,637 vehicles per day (2014 count), of which roughly 2% are trucks.

How long is River RD over Coldwater River?

The structure is 24 ft (7.3 m) long with a longest span of 11 ft (3.3 m).

Who owns River RD over Coldwater River?

It is owned by the County Highway Agency.