US Bridges

Cth R-North 4th ST over Rock River

Fair

Dodge County, Wisconsin · 0.6M N JCT Sth 19 · Structure no. B14017800000000

Built
2002
23 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
178 ft
3 main spans
Daily traffic
8,062
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Cth R-North 4th ST over Rock River is a prestressed concrete continuous stringer/multi-beam or girder carrying Cth R-North 4th ST over Rock River in Dodge County, Wisconsin. It was built in 2002, so it is 23 years old, younger 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 8,062 vehicles a day, roughly 1% of them trucks, projected to reach 8,868 by 2043. The structure is 178 ft (54.3 m) long and 50 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesCth R-North 4th ST
CrossesRock River
Location0.6M N JCT Sth 19
RouteCounty Highway 0R
CountyDodge County
StateWisconsin
Coordinates43.20167, -88.71547
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
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 rating73.9 US tons
Inventory rating37.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length178 ft (54.3 m)
Longest span59 ft (17.9 m)
Deck width50 ft (15.1 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,062 (2022)
Projected traffic8,868 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 R-North 4th ST over Rock River built?

It was built in 2002, making it 23 years old in 2025.

What condition is Cth R-North 4th ST over Rock 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 September 2024.

How much traffic does Cth R-North 4th ST over Rock River carry?

About 8,062 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Cth R-North 4th ST over Rock River?

The structure is 178 ft (54.3 m) long with a longest span of 59 ft (17.9 m) and a deck 50 ft wide.

Who owns Cth R-North 4th ST over Rock River?

It is owned by the City or Municipal Highway Agency.