US Bridges

Cth I (beloit Road over Calhoun Creek

Poor

Waukesha County, Wisconsin · 0.2M W of JCT Cth O · Structure no. B67031800000000

Built
1976
49 years old, rebuilt 2009
Condition
Poor
inspected October 2024
Type
Culvert
Steel
Length
23 ft
3 main spans
Daily traffic
9,000
2022 count
Owner
County
County Highway Agency

About this bridge

Cth I (beloit Road over Calhoun Creek is a steel culvert carrying Cth I (beloit Road over Calhoun Creek in Waukesha County, Wisconsin. It was built in 1976 and reconstructed in 2009, so it is 49 years old, older than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 9,000 vehicles a day, projected to reach 10,800 by 2042. The structure is 23 ft (7 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesCth I (beloit Road
CrossesCalhoun Creek
Location0.2M W of JCT Cth O
RouteCounty Highway 0I
CountyWaukesha County
StateWisconsin
Coordinates42.95554, -88.11175
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating21.4 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length23 ft (7 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,000 (2022)
Projected traffic10,800 by 2042
Trucks0%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$246,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth I (beloit Road over Calhoun Creek built?

It was built in 1976, making it 49 years old in 2025. It was reconstructed in 2009.

What condition is Cth I (beloit Road over Calhoun Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does Cth I (beloit Road over Calhoun Creek carry?

About 9,000 vehicles per day (2022 count).

How long is Cth I (beloit Road over Calhoun Creek?

The structure is 23 ft (7 m) long with a longest span of 6 ft (1.8 m).

Who owns Cth I (beloit Road over Calhoun Creek?

It is owned by the County Highway Agency.