US Bridges

Broadway ST over Chippewa River

Fair

Isabella County, Michigan · In Mt Pleasant · Structure no. 000000000004378

Built
1910
115 years old, rebuilt 1988
Condition
Fair
inspected July 2024
Type
Arch - Deck
Concrete
Length
94 ft
1 main span
Daily traffic
2,352
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Broadway ST over Chippewa River is a concrete arch - deck carrying Broadway ST over Chippewa River in Isabella County, Michigan. It was built in 1910 and reconstructed in 1988, so it is 115 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 2,352 vehicles a day, roughly 2% of them trucks, projected to reach 2,870 by 2039. The structure is 94 ft (28.6 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesBroadway ST
CrossesChippewa River
LocationIn Mt Pleasant
RouteCity Street 2024
CountyIsabella County
StateMichigan
Coordinates43.60449, -84.78236
Functional classUrban 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
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating61.2 US tons
Inventory rating36.7 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length94 ft (28.6 m)
Longest span88 ft (26.8 m)
Deck width44 ft (13.3 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,352 (2019)
Projected traffic2,870 by 2039
Trucks2%
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Broadway ST over Chippewa River built?

It was built in 1910, making it 115 years old in 2025. It was reconstructed in 1988.

What condition is Broadway ST over Chippewa 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 2024.

How much traffic does Broadway ST over Chippewa River carry?

About 2,352 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is Broadway ST over Chippewa River?

The structure is 94 ft (28.6 m) long with a longest span of 88 ft (26.8 m) and a deck 44 ft wide.

Who owns Broadway ST over Chippewa River?

It is owned by the City or Municipal Highway Agency.