US Bridges

Sth 16 EB over Oconomowoc River

Fair

Waukesha County, Wisconsin · 1.3 MI E JCT Sth 67 · Structure no. B67015800000000

Built
1990
35 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
134 ft
1 main span
Daily traffic
14,050
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 16 EB over Oconomowoc River is a prestressed concrete stringer/multi-beam or girder carrying Sth 16 EB over Oconomowoc River in Waukesha County, Wisconsin. It was built in 1990, so it is 35 years old, younger 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 14,050 vehicles a day, roughly 7% of them trucks, projected to reach 16,860 by 2042. The structure is 134 ft (40.8 m) long and 51 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSth 16 EB
CrossesOconomowoc River
Location1.3 MI E JCT Sth 67
RouteState Highway 16
CountyWaukesha County
StateWisconsin
Coordinates43.10796, -88.45368
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.4 US tons
Inventory rating41.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length134 ft (40.8 m)
Longest span130 ft (39.6 m)
Deck width51 ft (15.5 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,050 (2022)
Projected traffic16,860 by 2042
Trucks7%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 16 EB over Oconomowoc River built?

It was built in 1990, making it 35 years old in 2025.

What condition is Sth 16 EB 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 May 2023.

How much traffic does Sth 16 EB over Oconomowoc River carry?

About 14,050 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Sth 16 EB over Oconomowoc River?

The structure is 134 ft (40.8 m) long with a longest span of 130 ft (39.6 m) and a deck 51 ft wide.

Who owns Sth 16 EB over Oconomowoc River?

It is owned by the State Highway Agency.