US Bridges

North Road over Shiawassee River

PoorPosted for load

Genesee County, Michigan · NORTHOFUS-23RAMP · Structure no. 000000000002781

Built
1928
97 years old
Condition
Poor
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
5,647
2008 count
Owner
County
County Highway Agency

About this bridge

North Road over Shiawassee River is a steel stringer/multi-beam or girder carrying North Road over Shiawassee River in Genesee County, Michigan. It was built in 1928, so it is 97 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 5,647 vehicles a day, roughly 2% of them trucks, projected to reach 10,199 by 2028. The structure is 35 ft (10.6 m) long and 35 ft wide.

CarriesNorth Road
CrossesShiawassee River
LocationNORTHOFUS-23RAMP
RouteCounty Highway 0
Coordinates42.8151, -83.72744
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating7.5 US tons
Inventory rating4.6 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length35 ft (10.6 m)
Longest span34 ft (10.3 m)
Deck width35 ft (10.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,647 (2008)
Projected traffic10,199 by 2028
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 North Road over Shiawassee River built?

It was built in 1928, making it 97 years old in 2025.

What condition is North Road over Shiawassee River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does North Road over Shiawassee River carry?

About 5,647 vehicles per day (2008 count), of which roughly 2% are trucks.

How long is North Road over Shiawassee River?

The structure is 35 ft (10.6 m) long with a longest span of 34 ft (10.3 m) and a deck 35 ft wide.

Who owns North Road over Shiawassee River?

It is owned by the County Highway Agency.