US Bridges

IH 41/USH 45 Nb-Zo over Menomonee River

Fair

Milwaukee County, Wisconsin · 1.5M N JCT STH190(G) · Structure no. B40021700000000

Built
2001
24 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
248 ft
2 main spans
Daily traffic
69,500
2022 count
Owner
State
State Highway Agency

About this bridge

IH 41/USH 45 Nb-Zo over Menomonee River is a prestressed concrete continuous stringer/multi-beam or girder carrying IH 41/USH 45 Nb-Zo over Menomonee River in Milwaukee County, Wisconsin. It was built in 2001, so it is 24 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 5 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 69,500 vehicles a day, roughly 12% of them trucks, projected to reach 66,580 by 2043. The structure is 248 ft (75.6 m) long and 70 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesIH 41/USH 45 Nb-Zo
CrossesMenomonee River
Location1.5M N JCT STH190(G)
RouteInterstate 41
CountyMilwaukee County
StateWisconsin
Coordinates43.10853, -88.05742
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.8 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length248 ft (75.6 m)
Longest span122 ft (37.2 m)
Deck width70 ft (21.4 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic69,500 (2022)
Projected traffic66,580 by 2043
Trucks12%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was IH 41/USH 45 Nb-Zo over Menomonee River built?

It was built in 2001, making it 24 years old in 2025.

What condition is IH 41/USH 45 Nb-Zo over Menomonee 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 April 2024.

How much traffic does IH 41/USH 45 Nb-Zo over Menomonee River carry?

About 69,500 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is IH 41/USH 45 Nb-Zo over Menomonee River?

The structure is 248 ft (75.6 m) long with a longest span of 122 ft (37.2 m) and a deck 70 ft wide.

Who owns IH 41/USH 45 Nb-Zo over Menomonee River?

It is owned by the State Highway Agency.