US Bridges

Butternut Street over Mill Creek

FairPosted for load

Berrien County, Michigan · 470 Ft East of Main ST · Structure no. 000000000001062

Built
1976
49 years old
Condition
Fair
inspected September 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
54 ft
1 main span
Daily traffic
617
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Butternut Street over Mill Creek is a prestressed concrete box beam or girders - multiple carrying Butternut Street over Mill Creek in Berrien County, Michigan. It was built in 1976, so it is 49 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 617 vehicles a day, projected to reach 617 by 2042. The structure is 54 ft (16.4 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesButternut Street
CrossesMill Creek
Location470 Ft East of Main ST
RouteCity Street 0
Coordinates42.19043, -86.25788
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating56.8 US tons
Inventory rating34 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length54 ft (16.4 m)
Longest span54 ft (16.4 m)
Deck width37 ft (11.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic617 (2022)
Projected traffic617 by 2042
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Butternut Street over Mill Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is Butternut Street over Mill Creek 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 September 2023.

How much traffic does Butternut Street over Mill Creek carry?

About 617 vehicles per day (2022 count).

How long is Butternut Street over Mill Creek?

The structure is 54 ft (16.4 m) long with a longest span of 54 ft (16.4 m) and a deck 37 ft wide.

Who owns Butternut Street over Mill Creek?

It is owned by the City or Municipal Highway Agency.