US Bridges

US-23 SB over US-23 Br & Gtw RR

Fair

Genesee County, Michigan · In Fenton · Structure no. 000000000002476

Built
1958
67 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
333 ft
5 main spans
Daily traffic
23,577
2007 count
Owner
State
State Highway Agency

About this bridge

US-23 SB over US-23 Br & Gtw RR is a steel stringer/multi-beam or girder carrying US-23 SB over US-23 Br & Gtw RR in Genesee County, Michigan. It was built in 1958, so it is 67 years old, older 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 5 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 23,577 vehicles a day, roughly 9% of them trucks, projected to reach 37,269 by 2018. The structure is 333 ft (101.5 m) long and 48 ft wide.

CarriesUS-23 SB
CrossesUS-23 Br & Gtw RR
LocationIn Fenton
RouteU.S. Route 23
Coordinates42.80445, -83.72774
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating71.4 US tons
Inventory rating42.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length333 ft (101.5 m)
Longest span74 ft (22.5 m)
Deck width48 ft (14.7 m)
Roadway width47 ft (14.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,577 (2007)
Projected traffic37,269 by 2018
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US-23 SB over US-23 Br & Gtw RR built?

It was built in 1958, making it 67 years old in 2025.

What condition is US-23 SB over US-23 Br & Gtw RR 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 March 2024.

How much traffic does US-23 SB over US-23 Br & Gtw RR carry?

About 23,577 vehicles per day (2007 count), of which roughly 9% are trucks.

How long is US-23 SB over US-23 Br & Gtw RR?

The structure is 333 ft (101.5 m) long with a longest span of 74 ft (22.5 m) and a deck 48 ft wide.

Who owns US-23 SB over US-23 Br & Gtw RR?

It is owned by the State Highway Agency.