US Bridges

IH 41/USH 45/STH 1 over Sth 145

Fair

Milwaukee County, Wisconsin · 2.5 MI S JCT Sth 74 · Structure no. B40039600000000

Built
2000
25 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
344 ft
4 main spans
Daily traffic
51,000
2022 count
Owner
State
State Highway Agency

About this bridge

IH 41/USH 45/STH 1 over Sth 145 is a prestressed concrete stringer/multi-beam or girder carrying IH 41/USH 45/STH 1 over Sth 145 in Milwaukee County, Wisconsin. It was built in 2000, so it is 25 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 6 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 51,000 vehicles a day, roughly 10% of them trucks, projected to reach 52,296 by 2043. The structure is 344 ft (104.7 m) long and 59 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIH 41/USH 45/STH 1
CrossesSth 145
Location2.5 MI S JCT Sth 74
RouteInterstate 41
CountyMilwaukee County
StateWisconsin
Coordinates43.15153, -88.05512
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length344 ft (104.7 m)
Longest span108 ft (32.8 m)
Deck width59 ft (18 m)
Roadway width57 ft (17.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51,000 (2022)
Projected traffic52,296 by 2043
Trucks10%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 Sth 145 built?

It was built in 2000, making it 25 years old in 2025.

What condition is IH 41/USH 45/STH 1 over Sth 145 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 March 2024.

How much traffic does IH 41/USH 45/STH 1 over Sth 145 carry?

About 51,000 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is IH 41/USH 45/STH 1 over Sth 145?

The structure is 344 ft (104.7 m) long with a longest span of 108 ft (32.8 m) and a deck 59 ft wide.

Who owns IH 41/USH 45/STH 1 over Sth 145?

It is owned by the State Highway Agency.