US Bridges

Sth 22 over Mecan River

Fair

Marquette County, Wisconsin · 4.0M N JCT Cth J · Structure no. B39000400000000

Built
1951
74 years old, rebuilt 1990
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
73 ft
1 main span
Daily traffic
1,700
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 22 over Mecan River is a steel stringer/multi-beam or girder carrying Sth 22 over Mecan River in Marquette County, Wisconsin. It was built in 1951 and reconstructed in 1990, so it is 74 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 1,700 vehicles a day, roughly 9% of them trucks, projected to reach 2,370 by 2042. The structure is 73 ft (22.3 m) long and 31 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesSth 22
CrossesMecan River
Location4.0M N JCT Cth J
RouteState Highway 22
CountyMarquette County
StateWisconsin
Coordinates43.91579, -89.31216
Functional classRural 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.7 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length73 ft (22.3 m)
Longest span72 ft (21.8 m)
Deck width31 ft (9.3 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,700 (2022)
Projected traffic2,370 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

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 22 over Mecan River built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1990.

What condition is Sth 22 over Mecan 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 June 2023.

How much traffic does Sth 22 over Mecan River carry?

About 1,700 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Sth 22 over Mecan River?

The structure is 73 ft (22.3 m) long with a longest span of 72 ft (21.8 m) and a deck 31 ft wide.

Who owns Sth 22 over Mecan River?

It is owned by the State Highway Agency.