US Bridges

Park Street over ST Joseph River

FairPosted for load

Branch County, Michigan · In Village of Union City · Structure no. 000000000001188

Built
1975
50 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
133 ft
3 main spans
Daily traffic
1,800
1976 count
Owner
City
City or Municipal Highway Agency

About this bridge

Park Street over ST Joseph River is a concrete continuous slab carrying Park Street over ST Joseph River in Branch 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. Its operating status is: posted for load restriction.

It carries about 1,800 vehicles a day, projected to reach 2,700 by 2010. The structure is 133 ft (40.5 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesPark Street
CrossesST Joseph River
LocationIn Village of Union City
RouteCity Street 0
Coordinates42.06501, -85.13913
Functional classRural Minor Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length133 ft (40.5 m)
Longest span55 ft (16.7 m)
Deck width42 ft (12.8 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (1976)
Projected traffic2,700 by 2010
Trucks0%
Lanes on structure2
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 statusNot eligible for the National Register of Historic Places
Work proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$250 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Park Street over ST Joseph River built?

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

What condition is Park Street over ST Joseph 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 July 2023.

How much traffic does Park Street over ST Joseph River carry?

About 1,800 vehicles per day (1976 count).

How long is Park Street over ST Joseph River?

The structure is 133 ft (40.5 m) long with a longest span of 55 ft (16.7 m) and a deck 42 ft wide.

Who owns Park Street over ST Joseph River?

It is owned by the City or Municipal Highway Agency.