US Bridges

Lrd Chaffee ST over Oconomowoc River

Fair

Waukesha County, Wisconsin · 0.1M S JCT Sth 16 · Structure no. P67072000000000

Built
1964
61 years old
Condition
Fair
inspected June 2024
Type
Arch - Deck
Steel
Length
36 ft
2 main spans
Daily traffic
940
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lrd Chaffee ST over Oconomowoc River is a steel arch - deck carrying Lrd Chaffee ST over Oconomowoc River in Waukesha County, Wisconsin. It was built in 1964, so it is 61 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 940 vehicles a day, projected to reach 1,034 by 2043. The structure is 36 ft (11 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesLrd Chaffee ST
CrossesOconomowoc River
Location0.1M S JCT Sth 16
RouteCity Street 0
CountyWaukesha County
StateWisconsin
Coordinates43.11474, -88.51759
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating45.2 US tons
Inventory rating26.8 US tons

Structure

Structure typeArch - Deck
MaterialSteel
DeckSteel plate
Main spans2
Design loadH 15
Structure length36 ft (11 m)
Longest span17 ft (5.2 m)
Deck width36 ft (11 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic940 (2022)
Projected traffic1,034 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Lrd Chaffee ST over Oconomowoc River built?

It was built in 1964, making it 61 years old in 2025.

What condition is Lrd Chaffee ST 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 June 2024.

How much traffic does Lrd Chaffee ST over Oconomowoc River carry?

About 940 vehicles per day (2022 count).

How long is Lrd Chaffee ST over Oconomowoc River?

The structure is 36 ft (11 m) long with a longest span of 17 ft (5.2 m) and a deck 36 ft wide.

Who owns Lrd Chaffee ST over Oconomowoc River?

It is owned by the City or Municipal Highway Agency.