US Bridges

Keefer HWY over Sebewa Creek

Good

Ionia County, Michigan · 2 MI W Portland 5.6 MI S. · Structure no. 000000000004044

Built
2014
11 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
971
2014 count
Owner
County
County Highway Agency

About this bridge

Keefer HWY over Sebewa Creek is a prestressed concrete box beam or girders - multiple carrying Keefer HWY over Sebewa Creek in Ionia 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 971 vehicles a day, roughly 8% of them trucks, projected to reach 1,049 by 2034. The structure is 50 ft (15.2 m) long and 33 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesKeefer HWY
CrossesSebewa Creek
Location2 MI W Portland 5.6 MI S.
RouteCounty Highway 3475
CountyIonia County
StateMichigan
Coordinates42.79023, -84.95582
Functional classRural Major 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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94.2 US tons
Inventory rating72.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadGreater than HL 93
Structure length50 ft (15.2 m)
Longest span47 ft (14.3 m)
Deck width33 ft (10 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic971 (2014)
Projected traffic1,049 by 2034
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Keefer HWY over Sebewa Creek built?

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

What condition is Keefer HWY over Sebewa Creek 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 October 2023.

How much traffic does Keefer HWY over Sebewa Creek carry?

About 971 vehicles per day (2014 count), of which roughly 8% are trucks.

How long is Keefer HWY over Sebewa Creek?

The structure is 50 ft (15.2 m) long with a longest span of 47 ft (14.3 m) and a deck 33 ft wide.

Who owns Keefer HWY over Sebewa Creek?

It is owned by the County Highway Agency.