US Bridges

Sth 73-HUBBELL ST over Maunesha River

Fair

Dane County, Wisconsin · 0.1M N JCT Sth 19 (s) · Structure no. B13007300000000

Built
1957
68 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
80 ft
1 main span
Daily traffic
4,400
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 73-HUBBELL ST over Maunesha River is a steel stringer/multi-beam or girder carrying Sth 73-HUBBELL ST over Maunesha River in Dane County, Wisconsin. It was built in 1957, so it is 68 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 4,400 vehicles a day, roughly 6% of them trucks, projected to reach 5,280 by 2042. The structure is 80 ft (24.5 m) long and 38 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

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CarriesSth 73-HUBBELL ST
CrossesMaunesha River
Location0.1M N JCT Sth 19 (s)
RouteState Highway 73
CountyDane County
StateWisconsin
Coordinates43.16701, -89.0605
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.2 US tons
Inventory rating30.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length80 ft (24.5 m)
Longest span78 ft (23.8 m)
Deck width38 ft (11.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,400 (2022)
Projected traffic5,280 by 2042
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed29.8 mi (48 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 73-HUBBELL ST over Maunesha River built?

It was built in 1957, making it 68 years old in 2025.

What condition is Sth 73-HUBBELL ST over Maunesha 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 2023.

How much traffic does Sth 73-HUBBELL ST over Maunesha River carry?

About 4,400 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Sth 73-HUBBELL ST over Maunesha River?

The structure is 80 ft (24.5 m) long with a longest span of 78 ft (23.8 m) and a deck 38 ft wide.

Who owns Sth 73-HUBBELL ST over Maunesha River?

It is owned by the State Highway Agency.