US Bridges

Cth Jj over Vermont Creek

PoorPosted for load

Dane County, Wisconsin · 0.2M W JCT Sth 78 · Structure no. P13091800000000

Built
1958
67 years old
Condition
Poor
inspected October 2024
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
314
2022 count
Owner
County
County Highway Agency

About this bridge

Cth Jj over Vermont Creek is a concrete slab carrying Cth Jj over Vermont Creek in Dane County, Wisconsin. It was built in 1958, so it is 67 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 3 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. Its operating status is: posted for other load-capacity restriction.

It carries about 314 vehicles a day, projected to reach 345 by 2043. The structure is 23 ft (7 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCth Jj
CrossesVermont Creek
Location0.2M W JCT Sth 78
RouteCounty Highway 0JJ
CountyDane County
StateWisconsin
Coordinates43.11186, -89.75631
Functional classRural 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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for other load-capacity restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length23 ft (7 m)
Longest span23 ft (6.9 m)
Deck width26 ft (7.9 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic314 (2022)
Projected traffic345 by 2043
Trucks0%
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

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$143,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth Jj over Vermont Creek built?

It was built in 1958, making it 67 years old in 2025.

What condition is Cth Jj over Vermont 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 Jj over Vermont Creek carry?

About 314 vehicles per day (2022 count).

How long is Cth Jj over Vermont Creek?

The structure is 23 ft (7 m) long with a longest span of 23 ft (6.9 m) and a deck 26 ft wide.

Who owns Cth Jj over Vermont Creek?

It is owned by the County Highway Agency.