US Bridges

Sth 83 over Oconomowoc River

Fair

Waukesha County, Wisconsin · 0.1M N JCT Cth Vv · Structure no. B67095200000000

Built
1916
109 years old
Condition
Fair
inspected April 2024
Type
Arch - Deck
Concrete
Length
40 ft
1 main span
Daily traffic
4,700
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 83 over Oconomowoc River is a concrete arch - deck carrying Sth 83 over Oconomowoc River in Waukesha County, Wisconsin. It was built in 1916, so it is 109 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 4,700 vehicles a day, roughly 7% of them trucks, projected to reach 5,640 by 2042. The structure is 40 ft (12.2 m) long and 49 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSth 83
CrossesOconomowoc River
Location0.1M N JCT Cth Vv
RouteState Highway 83
CountyWaukesha County
StateWisconsin
Coordinates43.1595, -88.37071
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
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating55.3 US tons
Inventory rating42.5 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length40 ft (12.2 m)
Longest span35 ft (10.7 m)
Deck width49 ft (14.8 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,700 (2022)
Projected traffic5,640 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$311,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sth 83 over Oconomowoc River built?

It was built in 1916, making it 109 years old in 2025.

What condition is Sth 83 over Oconomowoc 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 April 2024.

How much traffic does Sth 83 over Oconomowoc River carry?

About 4,700 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Sth 83 over Oconomowoc River?

The structure is 40 ft (12.2 m) long with a longest span of 35 ft (10.7 m) and a deck 49 ft wide.

Who owns Sth 83 over Oconomowoc River?

It is owned by the State Highway Agency.