US Bridges

Sth 21 over E Fk Lemonweir River

Good

Monroe County, Wisconsin · 2.1M E JCT Sth 173 · Structure no. B41028300000000

Built
2012
13 years old
Condition
Good
inspected October 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
166 ft
2 main spans
Daily traffic
3,800
2021 count
Owner
State
State Highway Agency

About this bridge

Sth 21 over E Fk Lemonweir River is a prestressed concrete continuous stringer/multi-beam or girder carrying Sth 21 over E Fk Lemonweir River in Monroe County, Wisconsin. It was built in 2012, so it is 13 years old, younger than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,800 vehicles a day, projected to reach 4,560 by 2041. The structure is 166 ft (50.6 m) long and 47 ft wide. If it were closed, the detour would be 25.5 mi (41 km).

CarriesSth 21
CrossesE Fk Lemonweir River
Location2.1M E JCT Sth 173
RouteState Highway 21
Coordinates44.02771, -90.37099
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure9 ExcellentNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length166 ft (50.6 m)
Longest span80 ft (24.4 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,800 (2021)
Projected traffic4,560 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed25.5 mi (41 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sth 21 over E Fk Lemonweir River built?

It was built in 2012, making it 13 years old in 2025.

What condition is Sth 21 over E Fk Lemonweir River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2022.

How much traffic does Sth 21 over E Fk Lemonweir River carry?

About 3,800 vehicles per day (2021 count).

How long is Sth 21 over E Fk Lemonweir River?

The structure is 166 ft (50.6 m) long with a longest span of 80 ft (24.4 m) and a deck 47 ft wide.

Who owns Sth 21 over E Fk Lemonweir River?

It is owned by the State Highway Agency.