US Bridges

IH43 SB over Cth I (beloit Rd)

Fair

Waukesha County, Wisconsin · 2.9 M W JCT Sth 100 · Structure no. B67029700000000

Built
2007
18 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
137 ft
1 main span
Daily traffic
32,900
2022 count
Owner
State
State Highway Agency

About this bridge

IH43 SB over Cth I (beloit Rd) is a prestressed concrete stringer/multi-beam or girder carrying IH43 SB over Cth I (beloit Rd) in Waukesha County, Wisconsin. It was built in 2007, so it is 18 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 32,900 vehicles a day, projected to reach 43,700 by 2042. The structure is 137 ft (41.8 m) long and 79 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIH43 SB
CrossesCth I (beloit Rd)
Location2.9 M W JCT Sth 100
RouteInterstate 43
CountyWaukesha County
StateWisconsin
Coordinates42.95578, -88.10423
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 inspectionSeptember 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 rating110.1 US tons
Inventory rating60.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length137 ft (41.8 m)
Longest span134 ft (40.8 m)
Deck width79 ft (24 m)
Roadway width76 ft (23.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,900 (2022)
Projected traffic43,700 by 2042
Trucks0%
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 IH43 SB over Cth I (beloit Rd) built?

It was built in 2007, making it 18 years old in 2025.

What condition is IH43 SB 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 September 2023.

How much traffic does IH43 SB over Cth I (beloit Rd) carry?

About 32,900 vehicles per day (2022 count).

How long is IH43 SB over Cth I (beloit Rd)?

The structure is 137 ft (41.8 m) long with a longest span of 134 ft (40.8 m) and a deck 79 ft wide.

Who owns IH43 SB over Cth I (beloit Rd)?

It is owned by the State Highway Agency.