US Bridges

Concord Road over S Br Kalamazoo River

Fair

Hillsdale County, Michigan · 0.8 MI N of Litchfield · Structure no. 000000000003316

Built
1910
115 years old
Condition
Fair
inspected November 2024
Type
Tee Beam
Concrete
Length
31 ft
1 main span
Daily traffic
2,189
2013 count
Owner
County
County Highway Agency

About this bridge

Concord Road over S Br Kalamazoo River is a concrete tee beam carrying Concord Road over S Br Kalamazoo River in Hillsdale County, Michigan. It was built in 1910, 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 2,189 vehicles a day, projected to reach 3,591 by 2038. The structure is 31 ft (9.4 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesConcord Road
CrossesS Br Kalamazoo River
Location0.8 MI N of Litchfield
RouteCounty Highway 3031
CountyHillsdale County
StateMichigan
Coordinates42.05426, -84.65146
Functional classRural Major 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating56.8 US tons
Inventory rating34 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length31 ft (9.4 m)
Longest span30 ft (9.1 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,189 (2013)
Projected traffic3,591 by 2038
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
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 Concord Road over S Br Kalamazoo River built?

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

What condition is Concord Road over S Br Kalamazoo 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 November 2024.

How much traffic does Concord Road over S Br Kalamazoo River carry?

About 2,189 vehicles per day (2013 count).

How long is Concord Road over S Br Kalamazoo River?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9.1 m) and a deck 32 ft wide.

Who owns Concord Road over S Br Kalamazoo River?

It is owned by the County Highway Agency.