US Bridges

Sth 23-MONTELLO Av over Montello River

Fair

Marquette County, Wisconsin · 0.2M E JCT Cth Y · Structure no. B39097000000000

Built
1948
77 years old, rebuilt 1997
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
36 ft
1 main span
Daily traffic
5,900
2021 count
Owner
State
State Highway Agency

About this bridge

Sth 23-MONTELLO Av over Montello River is a steel stringer/multi-beam or girder carrying Sth 23-MONTELLO Av over Montello River in Marquette County, Wisconsin. It was built in 1948 and reconstructed in 1997, so it is 77 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 5,900 vehicles a day, roughly 8% of them trucks, projected to reach 7,080 by 2041. The structure is 36 ft (11.1 m) long and 59 ft wide. If it were closed, the detour would be 33.6 mi (54 km).

Location

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CarriesSth 23-MONTELLO Av
CrossesMontello River
Location0.2M E JCT Cth Y
RouteState Highway 23
CountyMarquette County
StateWisconsin
Coordinates43.79197, -89.32791
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length36 ft (11.1 m)
Longest span36 ft (11.1 m)
Deck width59 ft (18 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,900 (2021)
Projected traffic7,080 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed33.6 mi (54 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sth 23-MONTELLO Av over Montello River built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 1997.

What condition is Sth 23-MONTELLO Av over Montello 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 23-MONTELLO Av over Montello River carry?

About 5,900 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Sth 23-MONTELLO Av over Montello River?

The structure is 36 ft (11.1 m) long with a longest span of 36 ft (11.1 m) and a deck 59 ft wide.

Who owns Sth 23-MONTELLO Av over Montello River?

It is owned by the State Highway Agency.