US Bridges

M-21 over Waltz & Sturgis Drain

Fair

Clinton County, Michigan · Sorrel ST in Fowler · Structure no. 000000000001883

Built
2005
20 years old
Condition
Fair
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
3,160
2007 count
Owner
State
State Highway Agency

About this bridge

M-21 over Waltz & Sturgis Drain is a prestressed concrete box beam or girders - multiple carrying M-21 over Waltz & Sturgis Drain in Clinton County, Michigan. It was built in 2005, so it is 20 years old, younger 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 6 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 3,160 vehicles a day, roughly 10% of them trucks, projected to reach 4,567 by 2018. The structure is 29 ft (8.7 m) long and 66 ft wide.

Location

Open in Google Maps
CarriesM-21
CrossesWaltz & Sturgis Drain
LocationSorrel ST in Fowler
RouteState Highway 21
CountyClinton County
StateMichigan
Coordinates43.00186, -84.74273
Functional classRural Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97.9 US tons
Inventory rating41.4 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length29 ft (8.7 m)
Longest span28 ft (8.5 m)
Deck width66 ft (20.2 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,160 (2007)
Projected traffic4,567 by 2018
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 M-21 over Waltz & Sturgis Drain built?

It was built in 2005, making it 20 years old in 2025.

What condition is M-21 over Waltz & Sturgis Drain 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 October 2024.

How much traffic does M-21 over Waltz & Sturgis Drain carry?

About 3,160 vehicles per day (2007 count), of which roughly 10% are trucks.

How long is M-21 over Waltz & Sturgis Drain?

The structure is 29 ft (8.7 m) long with a longest span of 28 ft (8.5 m) and a deck 66 ft wide.

Who owns M-21 over Waltz & Sturgis Drain?

It is owned by the State Highway Agency.