US Bridges

Block Road over Sherman Mill Creek

Fair

St. Joseph County, Michigan · 4 MI E of White Pigeon · Structure no. 000000000010308

Built
1964
61 years old
Condition
Fair
inspected November 2023
Type
Slab
Wood or Timber
Length
28 ft
1 main span
Daily traffic
65
2018 count
Owner
County
County Highway Agency

About this bridge

Block Road over Sherman Mill Creek is a wood or timber slab carrying Block Road over Sherman Mill Creek in St. Joseph 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 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 65 vehicles a day, roughly 7% of them trucks, projected to reach 69 by 2038. The structure is 28 ft (8.5 m) long and 26 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesBlock Road
CrossesSherman Mill Creek
Location4 MI E of White Pigeon
RouteCounty Highway 0
CountySt. Joseph County
StateMichigan
Coordinates41.81567, -85.56989
Functional classRural Major Collector

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating53.5 US tons
Inventory rating37.5 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span27 ft (8.2 m)
Deck width26 ft (8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic65 (2018)
Projected traffic69 by 2038
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Block Road over Sherman Mill Creek built?

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

What condition is Block Road over Sherman Mill Creek 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 Block Road over Sherman Mill Creek carry?

About 65 vehicles per day (2018 count), of which roughly 7% are trucks.

How long is Block Road over Sherman Mill Creek?

The structure is 28 ft (8.5 m) long with a longest span of 27 ft (8.2 m) and a deck 26 ft wide.

Who owns Block Road over Sherman Mill Creek?

It is owned by the County Highway Agency.