US Bridges

IH 41/USH 45 Nb-Zo over UP RR

Good

Milwaukee County, Wisconsin · 4.5M N JCT IH 894 to W · Structure no. B40035900000000

Built
1967
58 years old, rebuilt 2001
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
360 ft
4 main spans
Daily traffic
69,000
2023 count
Owner
State
State Highway Agency

About this bridge

IH 41/USH 45 Nb-Zo over UP RR is a steel continuous stringer/multi-beam or girder carrying IH 41/USH 45 Nb-Zo over UP RR in Milwaukee County, Wisconsin. It was built in 1967 and reconstructed in 2001, so it is 58 years old, older 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 69,000 vehicles a day, roughly 3% of them trucks, projected to reach 66,735 by 2043. The structure is 360 ft (109.8 m) long and 54 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
CrossesUP RR
Location4.5M N JCT IH 894 to W
RouteInterstate 41
CountyMilwaukee County
StateWisconsin
Coordinates43.08224, -88.05712
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.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.7 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length360 ft (109.8 m)
Longest span119 ft (36.3 m)
Deck width54 ft (16.6 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic69,000 (2023)
Projected traffic66,735 by 2043
Trucks3%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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 41/USH 45 Nb-Zo over UP RR built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2001.

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

How much traffic does IH 41/USH 45 Nb-Zo over UP RR carry?

About 69,000 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is IH 41/USH 45 Nb-Zo over UP RR?

The structure is 360 ft (109.8 m) long with a longest span of 119 ft (36.3 m) and a deck 54 ft wide.

Who owns IH 41/USH 45 Nb-Zo over UP RR?

It is owned by the State Highway Agency.