US Bridges

Cth N over Br Red Cedar River

Poor

Dunn County, Wisconsin · 0.7M N JCT Sth 170 · Structure no. P17090100000000

Built
1934
91 years old
Condition
Poor
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
215
2024 count
Owner
County
County Highway Agency

About this bridge

Cth N over Br Red Cedar River is a steel stringer/multi-beam or girder carrying Cth N over Br Red Cedar River in Dunn County, Wisconsin. It was built in 1934, so it is 91 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 215 vehicles a day, projected to reach 223 by 2043. The structure is 35 ft (10.7 m) long and 22 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesCth N
CrossesBr Red Cedar River
Location0.7M N JCT Sth 170
RouteCounty Highway 0N
CountyDunn County
StateWisconsin
Coordinates45.02503, -91.76895
Functional classRural Minor Collector

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
Deck4 PoorAdvanced section loss, deterioration, 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 inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
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 alignment6: Equal to present minimum criteria
Operating rating41.4 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length35 ft (10.7 m)
Longest span34 ft (10.5 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic215 (2024)
Projected traffic223 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$216,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth N over Br Red Cedar River built?

It was built in 1934, making it 91 years old in 2025.

What condition is Cth N over Br Red Cedar River 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 Cth N over Br Red Cedar River carry?

About 215 vehicles per day (2024 count).

How long is Cth N over Br Red Cedar River?

The structure is 35 ft (10.7 m) long with a longest span of 34 ft (10.5 m) and a deck 22 ft wide.

Who owns Cth N over Br Red Cedar River?

It is owned by the County Highway Agency.