US Bridges

Cth O over Fox River

Poor

Marquette County, Wisconsin · 0.1M W JCT Cth F · Structure no. P39005000000000

Built
1961
64 years old
Condition
Poor
inspected August 2024
Type
Slab
Wood or Timber
Length
100 ft
5 main spans
Daily traffic
923
2024 count
Owner
County
County Highway Agency

About this bridge

Cth O over Fox River is a wood or timber slab carrying Cth O over Fox River in Marquette County, Wisconsin. It was built in 1961, so it is 64 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 923 vehicles a day, projected to reach 1,104 by 2041. The structure is 100 ft (30.6 m) long and 26 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesCth O
CrossesFox River
Location0.1M W JCT Cth F
RouteCounty Highway 0O
CountyMarquette County
StateWisconsin
Coordinates43.67171, -89.39591
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.6 US tons
Inventory rating46.4 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length100 ft (30.6 m)
Longest span20 ft (6.1 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic923 (2024)
Projected traffic1,104 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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$561,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth O over Fox River built?

It was built in 1961, making it 64 years old in 2025.

What condition is Cth O over Fox 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 August 2024.

How much traffic does Cth O over Fox River carry?

About 923 vehicles per day (2024 count).

How long is Cth O over Fox River?

The structure is 100 ft (30.6 m) long with a longest span of 20 ft (6.1 m) and a deck 26 ft wide.

Who owns Cth O over Fox River?

It is owned by the County Highway Agency.