US Bridges

IH 39 NB / IH 90 W over Spring Brook / Spring Br

Good

Rock County, Wisconsin · Please Update Location · Structure no. B53033300000000

Built
2018
7 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
115 ft
1 main span
Daily traffic
38,500
2022 count
Owner
State
State Highway Agency

About this bridge

IH 39 NB / IH 90 W over Spring Brook / Spring Br is a prestressed concrete stringer/multi-beam or girder carrying IH 39 NB / IH 90 W over Spring Brook / Spring Br in Rock County, Wisconsin. It was built in 2018, so it is 7 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 38,500 vehicles a day, projected to reach 46,200 by 2040. The structure is 115 ft (34.9 m) long and 75 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesIH 39 NB / IH 90 W
CrossesSpring Brook / Spring Br
LocationPlease Update Location
RouteInterstate 39
CountyRock County
StateWisconsin
Coordinates42.68278, -88.98333
Functional classUrban 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
Deck8 Very GoodNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.4 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length115 ft (34.9 m)
Longest span110 ft (33.5 m)
Deck width75 ft (22.8 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38,500 (2022)
Projected traffic46,200 by 2040
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was IH 39 NB / IH 90 W over Spring Brook / Spring Br built?

It was built in 2018, making it 7 years old in 2025.

What condition is IH 39 NB / IH 90 W over Spring Brook / Spring Br 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 August 2024.

How much traffic does IH 39 NB / IH 90 W over Spring Brook / Spring Br carry?

About 38,500 vehicles per day (2022 count).

How long is IH 39 NB / IH 90 W over Spring Brook / Spring Br?

The structure is 115 ft (34.9 m) long with a longest span of 110 ft (33.5 m) and a deck 75 ft wide.

Who owns IH 39 NB / IH 90 W over Spring Brook / Spring Br?

It is owned by the State Highway Agency.