US Bridges

Sth 30 WB over Lrd Fair Oaks Ave

Good

Dane County, Wisconsin · 0.9M W JCT Ush 51 to N · Structure no. B13020600000000

Built
1964
61 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
145 ft
2 main spans
Daily traffic
18,650
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 30 WB over Lrd Fair Oaks Ave is a steel continuous stringer/multi-beam or girder carrying Sth 30 WB over Lrd Fair Oaks Ave in Dane County, Wisconsin. It was built in 1964, so it is 61 years old, older than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 18,650 vehicles a day, roughly 12% of them trucks, projected to reach 22,380 by 2042. The structure is 145 ft (44.3 m) long and 34 ft wide.

CarriesSth 30 WB
CrossesLrd Fair Oaks Ave
Location0.9M W JCT Ush 51 to N
RouteState Highway 30
Coordinates43.10673, -89.33034
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.7 US tons
Inventory rating34 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length145 ft (44.3 m)
Longest span70 ft (21.3 m)
Deck width34 ft (10.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,650 (2022)
Projected traffic22,380 by 2042
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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$908,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sth 30 WB over Lrd Fair Oaks Ave built?

It was built in 1964, making it 61 years old in 2025.

What condition is Sth 30 WB over Lrd Fair Oaks Ave in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does Sth 30 WB over Lrd Fair Oaks Ave carry?

About 18,650 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is Sth 30 WB over Lrd Fair Oaks Ave?

The structure is 145 ft (44.3 m) long with a longest span of 70 ft (21.3 m) and a deck 34 ft wide.

Who owns Sth 30 WB over Lrd Fair Oaks Ave?

It is owned by the State Highway Agency.