US Bridges

Center Street over Saginaw River

Fair

Saginaw County, Michigan · In City of Saginaw · Structure no. 000000000009438

Built
1975
50 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
800 ft
7 main spans
Daily traffic
7,625
2015 count
Owner
City
City or Municipal Highway Agency

About this bridge

Center Street over Saginaw River is a steel continuous stringer/multi-beam or girder carrying Center Street over Saginaw River in Saginaw County, Michigan. It was built in 1975, so it is 50 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 7,625 vehicles a day, roughly 5% of them trucks, projected to reach 11,330 by 2035. The structure is 800 ft (243.8 m) long and 74 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCenter Street
CrossesSaginaw River
LocationIn City of Saginaw
RouteCity Street 2004
CountySaginaw County
StateMichigan
Coordinates43.40144, -83.96469
Functional classUrban Minor Arterial

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating41.1 US tons
Inventory rating31.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length800 ft (243.8 m)
Longest span128 ft (39 m)
Deck width74 ft (22.7 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,625 (2015)
Projected traffic11,330 by 2035
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost$839,000
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Center Street over Saginaw River built?

It was built in 1975, making it 50 years old in 2025.

What condition is Center Street over Saginaw River 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 December 2024.

How much traffic does Center Street over Saginaw River carry?

About 7,625 vehicles per day (2015 count), of which roughly 5% are trucks.

How long is Center Street over Saginaw River?

The structure is 800 ft (243.8 m) long with a longest span of 128 ft (39 m) and a deck 74 ft wide.

Who owns Center Street over Saginaw River?

It is owned by the City or Municipal Highway Agency.