US Bridges

IH 39/90 SB over Lrd Sigglekow RD

Fair

Dane County, Wisconsin · At Sigglekow RD · Structure no. B13072700000000

Built
2014
11 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
232 ft
2 main spans
Daily traffic
29,600
2022 count
Owner
State
State Highway Agency

About this bridge

IH 39/90 SB over Lrd Sigglekow RD is a prestressed concrete continuous stringer/multi-beam or girder carrying IH 39/90 SB over Lrd Sigglekow RD in Dane County, Wisconsin. It was built in 2014, so it is 11 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 29,600 vehicles a day, projected to reach 35,520 by 2042. The structure is 232 ft (70.7 m) long and 63 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesIH 39/90 SB
CrossesLrd Sigglekow RD
LocationAt Sigglekow RD
RouteInterstate 39
CountyDane County
StateWisconsin
Coordinates43.02709, -89.25616
Functional classRural Principal Arterial - Interstate

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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length232 ft (70.7 m)
Longest span116 ft (35.4 m)
Deck width63 ft (19.1 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,600 (2022)
Projected traffic35,520 by 2042
Trucks0%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 39/90 SB over Lrd Sigglekow RD built?

It was built in 2014, making it 11 years old in 2025.

What condition is IH 39/90 SB over Lrd Sigglekow RD 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 December 2024.

How much traffic does IH 39/90 SB over Lrd Sigglekow RD carry?

About 29,600 vehicles per day (2022 count).

How long is IH 39/90 SB over Lrd Sigglekow RD?

The structure is 232 ft (70.7 m) long with a longest span of 116 ft (35.4 m) and a deck 63 ft wide.

Who owns IH 39/90 SB over Lrd Sigglekow RD?

It is owned by the State Highway Agency.