US Bridges

Cth Bb over Oconto River

Fair

Oconto County, Wisconsin · 2.4M S JCT Sth 22 · Structure no. B42002000000000

Built
1973
52 years old, rebuilt 2020
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
132 ft
1 main span
Daily traffic
540
2022 count
Owner
County
County Highway Agency

About this bridge

Cth Bb over Oconto River is a prestressed concrete stringer/multi-beam or girder carrying Cth Bb over Oconto River in Oconto County, Wisconsin. It was built in 1973 and reconstructed in 2020, so it is 52 years old, older than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 540 vehicles a day, projected to reach 648 by 2042. The structure is 132 ft (40.2 m) long and 33 ft wide. If it were closed, the detour would be 10.6 mi (17 km).

Location

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CarriesCth Bb
CrossesOconto River
Location2.4M S JCT Sth 22
RouteCounty Highway 0BB
CountyOconto County
StateWisconsin
Coordinates44.86494, -88.29852
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93.6 US tons
Inventory rating41.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length132 ft (40.2 m)
Longest span130 ft (39.6 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic540 (2022)
Projected traffic648 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed10.6 mi (17 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth Bb over Oconto River built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2020.

What condition is Cth Bb over Oconto River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2024.

How much traffic does Cth Bb over Oconto River carry?

About 540 vehicles per day (2022 count).

How long is Cth Bb over Oconto River?

The structure is 132 ft (40.2 m) long with a longest span of 130 ft (39.6 m) and a deck 33 ft wide.

Who owns Cth Bb over Oconto River?

It is owned by the County Highway Agency.