US Bridges

Cth L over Cranberry Creek

Poor

Douglas County, Wisconsin · 3.8M S JCT Cth B · Structure no. P16005700000000

Built
1939
86 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
33 ft
1 main span
Daily traffic
301
2022 count
Owner
County
County Highway Agency

About this bridge

Cth L over Cranberry Creek is a steel stringer/multi-beam or girder carrying Cth L over Cranberry Creek in Douglas County, Wisconsin. It was built in 1939, so it is 86 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 301 vehicles a day, projected to reach 331 by 2043. The structure is 33 ft (10.1 m) long and 24 ft wide. If it were closed, the detour would be 17.4 mi (28 km).

Location

Open in Google Maps
CarriesCth L
CrossesCranberry Creek
Location3.8M S JCT Cth B
RouteCounty Highway 0L
CountyDouglas County
StateWisconsin
Coordinates46.4525, -91.95158
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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be 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 rating46.8 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length33 ft (10.1 m)
Longest span32 ft (9.7 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic301 (2022)
Projected traffic331 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed17.4 mi (28 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$207,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth L over Cranberry Creek built?

It was built in 1939, making it 86 years old in 2025.

What condition is Cth L over Cranberry 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 September 2024.

How much traffic does Cth L over Cranberry Creek carry?

About 301 vehicles per day (2022 count).

How long is Cth L over Cranberry Creek?

The structure is 33 ft (10.1 m) long with a longest span of 32 ft (9.7 m) and a deck 24 ft wide.

Who owns Cth L over Cranberry Creek?

It is owned by the County Highway Agency.