US Bridges

IH 43 NB over Cth I (beloit Rd)

Fair

Waukesha County, Wisconsin · 4.5 MI N JCT Cth Y · Structure no. B67013400000000

Built
1968
57 years old, rebuilt 1992
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
220 ft
3 main spans
Daily traffic
32,900
2022 count
Owner
State
State Highway Agency

About this bridge

IH 43 NB over Cth I (beloit Rd) is a steel continuous stringer/multi-beam or girder carrying IH 43 NB over Cth I (beloit Rd) in Waukesha County, Wisconsin. It was built in 1968 and reconstructed in 1992, so it is 57 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 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 32,900 vehicles a day, roughly 1% of them trucks, projected to reach 39,480 by 2042. The structure is 220 ft (67.1 m) long and 47 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesIH 43 NB
CrossesCth I (beloit Rd)
Location4.5 MI N JCT Cth Y
RouteInterstate 43
CountyWaukesha County
StateWisconsin
Coordinates42.95857, -88.07983
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating28.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length220 ft (67.1 m)
Longest span110 ft (33.5 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,900 (2022)
Projected traffic39,480 by 2042
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 43 NB over Cth I (beloit Rd) built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1992.

What condition is IH 43 NB over Cth I (beloit Rd) 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 May 2023.

How much traffic does IH 43 NB over Cth I (beloit Rd) carry?

About 32,900 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is IH 43 NB over Cth I (beloit Rd)?

The structure is 220 ft (67.1 m) long with a longest span of 110 ft (33.5 m) and a deck 47 ft wide.

Who owns IH 43 NB over Cth I (beloit Rd)?

It is owned by the State Highway Agency.