US Bridges

Dean Street over Prairie River

FairPosted for load

St. Joseph County, Michigan · 0.1 MI N of Centreville · Structure no. 000000000010294

Built
1967
58 years old
Condition
Fair
inspected November 2023
Type
Slab
Wood or Timber
Length
66 ft
3 main spans
Daily traffic
1,314
2017 count
Owner
County
County Highway Agency

About this bridge

Dean Street over Prairie River is a wood or timber slab carrying Dean Street over Prairie River in St. Joseph County, Michigan. It was built in 1967, so it is 58 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. Its operating status is: posted for load restriction.

It carries about 1,314 vehicles a day, roughly 12% of them trucks, projected to reach 1,395 by 2037. The structure is 66 ft (20.1 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesDean Street
CrossesPrairie River
Location0.1 MI N of Centreville
RouteCounty Highway 0
CountySt. Joseph County
StateMichigan
Coordinates41.93107, -85.5268
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.9 US tons
Inventory rating37.5 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 20
Structure length66 ft (20.1 m)
Longest span22 ft (6.7 m)
Deck width32 ft (9.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,314 (2017)
Projected traffic1,395 by 2037
Trucks12%
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 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 Dean Street over Prairie River built?

It was built in 1967, making it 58 years old in 2025.

What condition is Dean Street over Prairie River 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 Dean Street over Prairie River carry?

About 1,314 vehicles per day (2017 count), of which roughly 12% are trucks.

How long is Dean Street over Prairie River?

The structure is 66 ft (20.1 m) long with a longest span of 22 ft (6.7 m) and a deck 32 ft wide.

Who owns Dean Street over Prairie River?

It is owned by the County Highway Agency.