US Bridges

Cth V NB over IH 43/STH 57

Fair

Ozaukee County, Wisconsin · 3.7 MI S JCT Sth 33 · Structure no. B45003000000000

Built
1975
50 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
393 ft
2 main spans
Daily traffic
14,800
2022 count
Owner
State
State Highway Agency

About this bridge

Cth V NB over IH 43/STH 57 is a steel continuous stringer/multi-beam or girder carrying Cth V NB over IH 43/STH 57 in Ozaukee County, Wisconsin. It was built in 1975, so it is 50 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 14,800 vehicles a day, roughly 6% of them trucks, projected to reach 7,100 by 2042. The structure is 393 ft (119.7 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesCth V NB
CrossesIH 43/STH 57
Location3.7 MI S JCT Sth 33
RouteCounty Highway 0V
CountyOzaukee County
StateWisconsin
Coordinates43.33971, -87.92517
Functional classUrban Other Principal Arterial

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.6 US tons
Inventory rating23.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length393 ft (119.7 m)
Longest span195 ft (59.4 m)
Deck width44 ft (13.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,800 (2022)
Projected traffic7,100 by 2042
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
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 Cth V NB over IH 43/STH 57 built?

It was built in 1975, making it 50 years old in 2025.

What condition is Cth V NB over IH 43/STH 57 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 July 2023.

How much traffic does Cth V NB over IH 43/STH 57 carry?

About 14,800 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Cth V NB over IH 43/STH 57?

The structure is 393 ft (119.7 m) long with a longest span of 195 ft (59.4 m) and a deck 44 ft wide.

Who owns Cth V NB over IH 43/STH 57?

It is owned by the State Highway Agency.