US Bridges

Cth N over Little Lemonweir River

Poor

Monroe County, Wisconsin · 1.4M S JCT Cth a · Structure no. P41012200000000

Built
1940
85 years old
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
41 ft
1 main span
Daily traffic
250
2022 count
Owner
County
County Highway Agency

About this bridge

Cth N over Little Lemonweir River is a steel stringer/multi-beam or girder carrying Cth N over Little Lemonweir River in Monroe County, Wisconsin. It was built in 1940, so it is 85 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 3 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 250 vehicles a day, projected to reach 275 by 2043. The structure is 41 ft (12.4 m) long and 25 ft wide.

Location

Open in Google Maps
CarriesCth N
CrossesLittle Lemonweir River
Location1.4M S JCT Cth a
RouteCounty Highway 0N
CountyMonroe County
StateWisconsin
Coordinates43.87175, -90.37365
Functional classRural Local

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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length41 ft (12.4 m)
Longest span39 ft (11.9 m)
Deck width25 ft (7.6 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2022)
Projected traffic275 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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$210,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth N over Little Lemonweir River built?

It was built in 1940, making it 85 years old in 2025.

What condition is Cth N over Little Lemonweir 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 June 2024.

How much traffic does Cth N over Little Lemonweir River carry?

About 250 vehicles per day (2022 count).

How long is Cth N over Little Lemonweir River?

The structure is 41 ft (12.4 m) long with a longest span of 39 ft (11.9 m) and a deck 25 ft wide.

Who owns Cth N over Little Lemonweir River?

It is owned by the County Highway Agency.