US Bridges

Kings Mill Road over Mill Race

Fair

St. Joseph County, Michigan · 5 MI NW of Colon · Structure no. 000000000010382

Built
1906
119 years old, rebuilt 1981
Condition
Fair
inspected November 2023
Type
Slab
Wood or Timber
Length
24 ft
1 main span
Daily traffic
233
2003 count
Owner
County
County Highway Agency

About this bridge

Kings Mill Road over Mill Race is a wood or timber slab carrying Kings Mill Road over Mill Race in St. Joseph County, Michigan. It was built in 1906 and reconstructed in 1981, so it is 119 years old, older 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 5 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 233 vehicles a day, roughly 5% of them trucks, projected to reach 299 by 2023. The structure is 24 ft (7.3 m) long and 20 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesKings Mill Road
CrossesMill Race
Location5 MI NW of Colon
RouteCounty Highway 0
CountySt. Joseph County
StateMichigan
Coordinates42.02416, -85.3754
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating51.8 US tons
Inventory rating36.4 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 20
Structure length24 ft (7.3 m)
Longest span22 ft (6.7 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic233 (2003)
Projected traffic299 by 2023
Trucks5%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Kings Mill Road over Mill Race built?

It was built in 1906, making it 119 years old in 2025. It was reconstructed in 1981.

What condition is Kings Mill Road over Mill Race 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 November 2023.

How much traffic does Kings Mill Road over Mill Race carry?

About 233 vehicles per day (2003 count), of which roughly 5% are trucks.

How long is Kings Mill Road over Mill Race?

The structure is 24 ft (7.3 m) long with a longest span of 22 ft (6.7 m) and a deck 20 ft wide.

Who owns Kings Mill Road over Mill Race?

It is owned by the County Highway Agency.