US Bridges

IH 94 EB over Koshkonong Creek

Fair

Dane County, Wisconsin · 1.7M E JCT Cth N to N · Structure no. B13015400000000

Built
1962
63 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
27 ft
1 main span
Daily traffic
21,200
2022 count
Owner
State
State Highway Agency

About this bridge

IH 94 EB over Koshkonong Creek is a steel stringer/multi-beam or girder carrying IH 94 EB over Koshkonong Creek in Dane County, Wisconsin. It was built in 1962, 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 21,200 vehicles a day, roughly 14% of them trucks, projected to reach 25,440 by 2042. The structure is 27 ft (8.1 m) long and 44 ft wide.

Location

Open in Google Maps
CarriesIH 94 EB
CrossesKoshkonong Creek
Location1.7M E JCT Cth N to N
RouteInterstate 94
CountyDane County
StateWisconsin
Coordinates43.10856, -89.17006
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.2 US tons
Inventory rating42.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length27 ft (8.1 m)
Longest span27 ft (8.1 m)
Deck width44 ft (13.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,200 (2022)
Projected traffic25,440 by 2042
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was IH 94 EB over Koshkonong Creek built?

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

What condition is IH 94 EB over Koshkonong Creek 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 IH 94 EB over Koshkonong Creek carry?

About 21,200 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is IH 94 EB over Koshkonong Creek?

The structure is 27 ft (8.1 m) long with a longest span of 27 ft (8.1 m) and a deck 44 ft wide.

Who owns IH 94 EB over Koshkonong Creek?

It is owned by the State Highway Agency.