US Bridges

Sth 33 over IH 39

Fair

Columbia County, Wisconsin · 2.0M E JCT IH 90 to E · Structure no. B11005400000000

Built
1962
63 years old, rebuilt 1986
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
222 ft
4 main spans
Daily traffic
8,000
2021 count
Owner
State
State Highway Agency

About this bridge

Sth 33 over IH 39 is a steel continuous stringer/multi-beam or girder carrying Sth 33 over IH 39 in Columbia County, Wisconsin. It was built in 1962 and reconstructed in 1986, so it is 63 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 8,000 vehicles a day, roughly 3% of them trucks, projected to reach 9,600 by 2041. The structure is 222 ft (67.7 m) long and 35 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSth 33
CrossesIH 39
Location2.0M E JCT IH 90 to E
RouteState Highway 33
CountyColumbia County
StateWisconsin
Coordinates43.52499, -89.48971
Functional classUrban 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating28.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length222 ft (67.7 m)
Longest span75 ft (22.9 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,000 (2021)
Projected traffic9,600 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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$1.7 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sth 33 over IH 39 built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1986.

What condition is Sth 33 over IH 39 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 33 over IH 39 carry?

About 8,000 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Sth 33 over IH 39?

The structure is 222 ft (67.7 m) long with a longest span of 75 ft (22.9 m) and a deck 35 ft wide.

Who owns Sth 33 over IH 39?

It is owned by the State Highway Agency.