US Bridges

South Bridge ST N over Lake Creek

Fair

Ionia County, Michigan · In Saranac · Structure no. 000000000004108

Built
1987
38 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
1,333
2003 count
Owner
City
City or Municipal Highway Agency

About this bridge

South Bridge ST N over Lake Creek is a prestressed concrete box beam or girders - multiple carrying South Bridge ST N over Lake Creek in Ionia County, Michigan. It was built in 1987, so it is 38 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 1,333 vehicles a day, roughly 5% of them trucks, projected to reach 1,550 by 2023. The structure is 50 ft (15.2 m) long and 44 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSouth Bridge ST N
CrossesLake Creek
LocationIn Saranac
RouteCity Street 3415
CountyIonia County
StateMichigan
Coordinates42.92521, -85.21313
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.4 US tons
Inventory rating42.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20 + Mod
Structure length50 ft (15.2 m)
Longest span48 ft (14.5 m)
Deck width44 ft (13.3 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,333 (2003)
Projected traffic1,550 by 2023
Trucks5%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 South Bridge ST N over Lake Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is South Bridge ST N over Lake 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 September 2023.

How much traffic does South Bridge ST N over Lake Creek carry?

About 1,333 vehicles per day (2003 count), of which roughly 5% are trucks.

How long is South Bridge ST N over Lake Creek?

The structure is 50 ft (15.2 m) long with a longest span of 48 ft (14.5 m) and a deck 44 ft wide.

Who owns South Bridge ST N over Lake Creek?

It is owned by the City or Municipal Highway Agency.