US Bridges

IH Ramp Sth 172 to over IH-43

Fair

Brown County, Wisconsin · 1.8M E JCT Cth Gv · Structure no. B05019300000000

Built
1981
44 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
432 ft
3 main spans
Daily traffic
19,900
2022 count
Owner
State
State Highway Agency

About this bridge

IH Ramp Sth 172 to over IH-43 is a steel continuous stringer/multi-beam or girder carrying IH Ramp Sth 172 to over IH-43 in Brown County, Wisconsin. It was built in 1981, so it is 44 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 19,900 vehicles a day, roughly 1% of them trucks, projected to reach 28,100 by 2043. The structure is 432 ft (131.6 m) long and 43 ft wide.

Location

Open in Google Maps
CarriesIH Ramp Sth 172 to
CrossesIH-43
Location1.8M E JCT Cth Gv
RouteInterstate 43
CountyBrown County
StateWisconsin
Coordinates44.45573, -87.9632
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 inspectionMarch 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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.6 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length432 ft (131.6 m)
Longest span182 ft (55.5 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,900 (2022)
Projected traffic28,100 by 2043
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 Ramp Sth 172 to over IH-43 built?

It was built in 1981, making it 44 years old in 2025.

What condition is IH Ramp Sth 172 to over IH-43 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 Ramp Sth 172 to over IH-43 carry?

About 19,900 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is IH Ramp Sth 172 to over IH-43?

The structure is 432 ft (131.6 m) long with a longest span of 182 ft (55.5 m) and a deck 43 ft wide.

Who owns IH Ramp Sth 172 to over IH-43?

It is owned by the State Highway Agency.