US Bridges

Sth 124-JEFFERSON over Duncan Creek

Poor

Chippewa County, Wisconsin · 0.4M N JCT Sth 178 · Structure no. B09000100000000

Built
1949
76 years old, rebuilt 1989
Condition
Poor
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
156 ft
3 main spans
Daily traffic
9,920
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Sth 124-JEFFERSON over Duncan Creek is a steel continuous stringer/multi-beam or girder carrying Sth 124-JEFFERSON over Duncan Creek in Chippewa County, Wisconsin. It was built in 1949 and reconstructed in 1989, so it is 76 years old, older than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 9,920 vehicles a day, roughly 3% of them trucks, projected to reach 10,494 by 2043. The structure is 156 ft (47.7 m) long and 56 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSth 124-JEFFERSON
CrossesDuncan Creek
Location0.4M N JCT Sth 178
RouteState Highway 124
Coordinates44.94381, -91.39628
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.8 US tons
Inventory rating28.5 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length156 ft (47.7 m)
Longest span51 ft (15.5 m)
Deck width56 ft (17.1 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,920 (2023)
Projected traffic10,494 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.3 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sth 124-JEFFERSON over Duncan Creek built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 1989.

What condition is Sth 124-JEFFERSON over Duncan Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does Sth 124-JEFFERSON over Duncan Creek carry?

About 9,920 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Sth 124-JEFFERSON over Duncan Creek?

The structure is 156 ft (47.7 m) long with a longest span of 51 ft (15.5 m) and a deck 56 ft wide.

Who owns Sth 124-JEFFERSON over Duncan Creek?

It is owned by the City or Municipal Highway Agency.