US Bridges

IH Ramp IH 43 Nb-S over Sth 54 Eb-Sth 57 NB

Fair

Brown County, Wisconsin · At JCT IH 43-STH 54-57 · Structure no. B05021400000000

Built
1979
46 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
166 ft
3 main spans
Daily traffic
2,100
2022 count
Owner
State
State Highway Agency

About this bridge

IH Ramp IH 43 Nb-S over Sth 54 Eb-Sth 57 NB is a steel continuous stringer/multi-beam or girder carrying IH Ramp IH 43 Nb-S over Sth 54 Eb-Sth 57 NB in Brown County, Wisconsin. It was built in 1979, so it is 46 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 2,100 vehicles a day, roughly 1% of them trucks, projected to reach 49,160 by 2043. The structure is 166 ft (50.5 m) long and 34 ft wide.

CarriesIH Ramp IH 43 Nb-S
CrossesSth 54 Eb-Sth 57 NB
LocationAt JCT IH 43-STH 54-57
RouteInterstate 0
Coordinates44.52038, -87.95099
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 48 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 rating66.6 US tons
Inventory rating39.2 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length166 ft (50.5 m)
Longest span94 ft (28.7 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,100 (2022)
Projected traffic49,160 by 2043
Trucks1%
Lanes on structure1
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 IH 43 Nb-S over Sth 54 Eb-Sth 57 NB built?

It was built in 1979, making it 46 years old in 2025.

What condition is IH Ramp IH 43 Nb-S over Sth 54 Eb-Sth 57 NB 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 2024.

How much traffic does IH Ramp IH 43 Nb-S over Sth 54 Eb-Sth 57 NB carry?

About 2,100 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is IH Ramp IH 43 Nb-S over Sth 54 Eb-Sth 57 NB?

The structure is 166 ft (50.5 m) long with a longest span of 94 ft (28.7 m) and a deck 34 ft wide.

Who owns IH Ramp IH 43 Nb-S over Sth 54 Eb-Sth 57 NB?

It is owned by the State Highway Agency.