US Bridges

Lrd North 21st Str over Manitowoc River

Fair

Manitowoc County, Wisconsin · 0.6M N JCT Ush 151 · Structure no. B36014000000000

Built
1990
35 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
302 ft
3 main spans
Daily traffic
14,600
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lrd North 21st Str over Manitowoc River is a prestressed concrete continuous stringer/multi-beam or girder carrying Lrd North 21st Str over Manitowoc River in Manitowoc County, Wisconsin. It was built in 1990, so it is 35 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 14,600 vehicles a day, projected to reach 20,509 by 2043. The structure is 302 ft (92.1 m) long and 43 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesLrd North 21st Str
CrossesManitowoc River
Location0.6M N JCT Ush 151
RouteCity Street 0
CountyManitowoc County
StateWisconsin
Coordinates44.09664, -87.67422
Functional classUrban Minor 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.2 US tons
Inventory rating32.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length302 ft (92.1 m)
Longest span101 ft (30.7 m)
Deck width43 ft (13 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,600 (2024)
Projected traffic20,509 by 2043
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.3 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lrd North 21st Str over Manitowoc River built?

It was built in 1990, making it 35 years old in 2025.

What condition is Lrd North 21st Str over Manitowoc River 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 2024.

How much traffic does Lrd North 21st Str over Manitowoc River carry?

About 14,600 vehicles per day (2024 count).

How long is Lrd North 21st Str over Manitowoc River?

The structure is 302 ft (92.1 m) long with a longest span of 101 ft (30.7 m) and a deck 43 ft wide.

Who owns Lrd North 21st Str over Manitowoc River?

It is owned by the City or Municipal Highway Agency.