US Bridges

Sth 64 over Duncan Creek

Fair

Chippewa County, Wisconsin · 0.2M E JCT Ush 53 to N · Structure no. B09001500000000

Built
1957
68 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete Continuous
Length
104 ft
3 main spans
Daily traffic
2,700
2021 count
Owner
State
State Highway Agency

About this bridge

Sth 64 over Duncan Creek is a concrete continuous slab carrying Sth 64 over Duncan Creek in Chippewa County, Wisconsin. It was built in 1957, so it is 68 years old, older than the Wisconsin average of 40.3 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 2,700 vehicles a day, roughly 8% of them trucks, projected to reach 2,540 by 2042. The structure is 104 ft (31.8 m) long and 34 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

Location

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CarriesSth 64
CrossesDuncan Creek
Location0.2M E JCT Ush 53 to N
RouteState Highway 64
CountyChippewa County
StateWisconsin
Coordinates45.13483, -91.51594
Functional classRural 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
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 inspectionMay 2023
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 alignment8: Equal to present desirable criteria
Operating rating45.2 US tons
Inventory rating26.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length104 ft (31.8 m)
Longest span40 ft (12.2 m)
Deck width34 ft (10.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,700 (2021)
Projected traffic2,540 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed12.4 mi (20 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Sth 64 over Duncan Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is Sth 64 over Duncan 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 May 2023.

How much traffic does Sth 64 over Duncan Creek carry?

About 2,700 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Sth 64 over Duncan Creek?

The structure is 104 ft (31.8 m) long with a longest span of 40 ft (12.2 m) and a deck 34 ft wide.

Who owns Sth 64 over Duncan Creek?

It is owned by the State Highway Agency.