US Bridges

Summers Road over Cn North America

Fair

Lapeer County, Michigan · Sec 18 Imlaytwp · Structure no. 000000000005430

Built
2004
21 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
115 ft
3 main spans
Daily traffic
180
2018 count
Owner
County
County Highway Agency

About this bridge

Summers Road over Cn North America is a prestressed concrete box beam or girders - multiple carrying Summers Road over Cn North America in Lapeer County, Michigan. It was built in 2004, so it is 21 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 180 vehicles a day, projected to reach 220 by 2038. The structure is 115 ft (35.1 m) long and 32 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesSummers Road
CrossesCn North America
LocationSec 18 Imlaytwp
RouteCounty Highway 0
CountyLapeer County
StateMichigan
Coordinates43.02645, -83.10723
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating90.7 US tons
Inventory rating54.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length115 ft (35.1 m)
Longest span51 ft (15.6 m)
Deck width32 ft (9.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (2018)
Projected traffic220 by 2038
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
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 statusListed on the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Summers Road over Cn North America built?

It was built in 2004, making it 21 years old in 2025.

What condition is Summers Road over Cn North America 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 July 2023.

How much traffic does Summers Road over Cn North America carry?

About 180 vehicles per day (2018 count).

How long is Summers Road over Cn North America?

The structure is 115 ft (35.1 m) long with a longest span of 51 ft (15.6 m) and a deck 32 ft wide.

Who owns Summers Road over Cn North America?

It is owned by the County Highway Agency.