US Bridges

IH Ramp Watertown over IH 41/USH 45 NB

Good

Milwaukee County, Wisconsin · 0.5 MI N JCT Ush 18 · Structure no. B40078300000000

Built
2014
11 years old
Condition
Good
inspected September 2024
Type
Box Beam or Girders - Single or Spread
Steel
Length
349 ft
3 main spans
Daily traffic
2,600
2022 count
Owner
State
State Highway Agency

About this bridge

IH Ramp Watertown over IH 41/USH 45 NB is a steel box beam or girders - single or spread carrying IH Ramp Watertown over IH 41/USH 45 NB in Milwaukee County, Wisconsin. It was built in 2014, so it is 11 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 2,600 vehicles a day, projected to reach 3,400 by 2043. The structure is 349 ft (106.5 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesIH Ramp Watertown
CrossesIH 41/USH 45 NB
Location0.5 MI N JCT Ush 18
RouteInterstate 41
CountyMilwaukee County
StateWisconsin
Coordinates43.04334, -88.03515
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating39.2 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length349 ft (106.5 m)
Longest span119 ft (36.3 m)
Deck width32 ft (9.7 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,600 (2022)
Projected traffic3,400 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 Ramp Watertown over IH 41/USH 45 NB built?

It was built in 2014, making it 11 years old in 2025.

What condition is IH Ramp Watertown over IH 41/USH 45 NB 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 September 2024.

How much traffic does IH Ramp Watertown over IH 41/USH 45 NB carry?

About 2,600 vehicles per day (2022 count).

How long is IH Ramp Watertown over IH 41/USH 45 NB?

The structure is 349 ft (106.5 m) long with a longest span of 119 ft (36.3 m) and a deck 32 ft wide.

Who owns IH Ramp Watertown over IH 41/USH 45 NB?

It is owned by the State Highway Agency.