US Bridges

Mower Road over Cole Drain

PoorPosted for load

Saginaw County, Michigan · 0.4 MI N of Curtis Road · Structure no. 000000000009409

Built
1920
105 years old
Condition
Poor
inspected May 2024
Type
Slab
Concrete
Length
135 ft
3 main spans
Daily traffic
116
2007 count
Owner
County
County Highway Agency

About this bridge

Mower Road over Cole Drain is a concrete slab carrying Mower Road over Cole Drain in Saginaw County, Michigan. It was built in 1920, so it is 105 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 116 vehicles a day, roughly 5% of them trucks, projected to reach 122 by 2017. The structure is 135 ft (41.1 m) long and 21 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMower Road
CrossesCole Drain
Location0.4 MI N of Curtis Road
RouteCounty Highway 0
Coordinates43.32761, -83.96859
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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating19.8 US tons
Inventory rating11.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length135 ft (41.1 m)
Longest span45 ft (13.7 m)
Deck width21 ft (6.4 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic116 (2007)
Projected traffic122 by 2017
Trucks5%
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 statusListed on the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$800,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mower Road over Cole Drain built?

It was built in 1920, making it 105 years old in 2025.

What condition is Mower Road over Cole Drain 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 May 2024.

How much traffic does Mower Road over Cole Drain carry?

About 116 vehicles per day (2007 count), of which roughly 5% are trucks.

How long is Mower Road over Cole Drain?

The structure is 135 ft (41.1 m) long with a longest span of 45 ft (13.7 m) and a deck 21 ft wide.

Who owns Mower Road over Cole Drain?

It is owned by the County Highway Agency.