US Bridges

Floating Bridge RD over Rocky River

Good

St. Joseph County, Michigan · SW of Moorepark · Structure no. 000000000010297

Built
2014
11 years old
Condition
Good
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
90 ft
1 main span
Daily traffic
143
2018 count
Owner
County
County Highway Agency

About this bridge

Floating Bridge RD over Rocky River is a prestressed concrete box beam or girders - multiple carrying Floating Bridge RD over Rocky River in St. Joseph County, Michigan. It was built in 2014, so it is 11 years old, younger than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 143 vehicles a day, roughly 16% of them trucks, projected to reach 152 by 2038. The structure is 90 ft (27.4 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesFloating Bridge RD
CrossesRocky River
LocationSW of Moorepark
RouteCounty Highway 0
CountySt. Joseph County
StateMichigan
Coordinates42.0057, -85.64614
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating99.3 US tons
Inventory rating66.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length90 ft (27.4 m)
Longest span89 ft (27 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic143 (2018)
Projected traffic152 by 2038
Trucks16%
Lanes on structure2
Traffic directionTwo-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 Floating Bridge RD over Rocky River built?

It was built in 2014, making it 11 years old in 2025.

What condition is Floating Bridge RD over Rocky River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does Floating Bridge RD over Rocky River carry?

About 143 vehicles per day (2018 count), of which roughly 16% are trucks.

How long is Floating Bridge RD over Rocky River?

The structure is 90 ft (27.4 m) long with a longest span of 89 ft (27 m) and a deck 35 ft wide.

Who owns Floating Bridge RD over Rocky River?

It is owned by the County Highway Agency.