US Bridges

IH 39 SB / IH 90 E over Cth O

Good

Rock County, Wisconsin · 0.6M E Sth 11 to E · Structure no. B53022900000000

Built
2003
22 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
277 ft
5 main spans
Daily traffic
32,550
2022 count
Owner
State
State Highway Agency

About this bridge

IH 39 SB / IH 90 E over Cth O is a prestressed concrete continuous stringer/multi-beam or girder carrying IH 39 SB / IH 90 E over Cth O in Rock County, Wisconsin. It was built in 2003, so it is 22 years old, younger than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 32,550 vehicles a day, projected to reach 47,150 by 2040. The structure is 277 ft (84.3 m) long and 85 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesIH 39 SB / IH 90 E
CrossesCth O
Location0.6M E Sth 11 to E
RouteInterstate 39
Coordinates42.66608, -88.98352
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length277 ft (84.3 m)
Longest span57 ft (17.4 m)
Deck width85 ft (25.8 m)
Roadway width82 ft (25 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,550 (2022)
Projected traffic47,150 by 2040
Trucks0%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 39 SB / IH 90 E over Cth O built?

It was built in 2003, making it 22 years old in 2025.

What condition is IH 39 SB / IH 90 E over Cth O in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does IH 39 SB / IH 90 E over Cth O carry?

About 32,550 vehicles per day (2022 count).

How long is IH 39 SB / IH 90 E over Cth O?

The structure is 277 ft (84.3 m) long with a longest span of 57 ft (17.4 m) and a deck 85 ft wide.

Who owns IH 39 SB / IH 90 E over Cth O?

It is owned by the State Highway Agency.