US Bridges

Weidman Road over Coldwater River

Poor

Isabella County, Michigan · 0.1 M E SW Cor Sec 18 T15 · Structure no. 000000000004283

Built
1966
59 years old
Condition
Poor
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
51 ft
1 main span
Daily traffic
3,604
2023 count
Owner
County
County Highway Agency

About this bridge

Weidman Road over Coldwater River is a steel stringer/multi-beam or girder carrying Weidman Road over Coldwater River in Isabella County, Michigan. It was built in 1966, so it is 59 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 3,604 vehicles a day, roughly 4% of them trucks, projected to reach 4,397 by 2043. The structure is 51 ft (15.5 m) long and 29 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesWeidman Road
CrossesColdwater River
Location0.1 M E SW Cor Sec 18 T15
RouteCounty Highway 3758
CountyIsabella County
StateMichigan
Coordinates43.6833, -84.96644
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.2 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadH 15
Structure length51 ft (15.5 m)
Longest span49 ft (14.9 m)
Deck width29 ft (8.9 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,604 (2023)
Projected traffic4,397 by 2043
Trucks4%
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 Weidman Road over Coldwater River built?

It was built in 1966, making it 59 years old in 2025.

What condition is Weidman Road 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 March 2024.

How much traffic does Weidman Road over Coldwater River carry?

About 3,604 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Weidman Road over Coldwater River?

The structure is 51 ft (15.5 m) long with a longest span of 49 ft (14.9 m) and a deck 29 ft wide.

Who owns Weidman Road over Coldwater River?

It is owned by the County Highway Agency.