US Bridges

IH 41/USH 45/STH 1 over Cnw RR

Fair

Milwaukee County, Wisconsin · 2.3 MI N JCT Sth 190 · Structure no. B40036500000000

Built
1967
58 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
158 ft
3 main spans
Daily traffic
54,500
2021 count
Owner
State
State Highway Agency

About this bridge

IH 41/USH 45/STH 1 over Cnw RR is a steel continuous stringer/multi-beam or girder carrying IH 41/USH 45/STH 1 over Cnw RR in Milwaukee County, Wisconsin. It was built in 1967, 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 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 54,500 vehicles a day, roughly 3% of them trucks, projected to reach 44,386 by 2043. The structure is 158 ft (48.1 m) long and 71 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesIH 41/USH 45/STH 1
CrossesCnw RR
Location2.3 MI N JCT Sth 190
RouteInterstate 41
CountyMilwaukee County
StateWisconsin
Coordinates43.12093, -88.05739
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.8 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length158 ft (48.1 m)
Longest span60 ft (18.4 m)
Deck width71 ft (21.5 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic54,500 (2021)
Projected traffic44,386 by 2043
Trucks3%
Lanes on structure4
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/STH 1 over Cnw RR built?

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

What condition is IH 41/USH 45/STH 1 over Cnw RR 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/STH 1 over Cnw RR carry?

About 54,500 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is IH 41/USH 45/STH 1 over Cnw RR?

The structure is 158 ft (48.1 m) long with a longest span of 60 ft (18.4 m) and a deck 71 ft wide.

Who owns IH 41/USH 45/STH 1 over Cnw RR?

It is owned by the State Highway Agency.