Sth 30 WB over Lrd Thompson Road
FairDane County, Wisconsin · 1.1M W JCT IH 94 to W · Structure no. B13013500000000
- Built
- 1961
- 64 years old, rebuilt 1997
- Condition
- Fair
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 148 ft
- 3 main spans
- Daily traffic
- 20,950
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Sth 30 WB over Lrd Thompson Road is a prestressed concrete stringer/multi-beam or girder carrying Sth 30 WB over Lrd Thompson Road in Dane County, Wisconsin. It was built in 1961 and reconstructed in 1997, so it is 64 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 20,950 vehicles a day, roughly 12% of them trucks, projected to reach 25,140 by 2042. The structure is 148 ft (45.1 m) long and 47 ft wide.
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sth 30 WB over Lrd Thompson Road built?
It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1997.
What condition is Sth 30 WB over Lrd Thompson Road 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 April 2023.
How much traffic does Sth 30 WB over Lrd Thompson Road carry?
About 20,950 vehicles per day (2022 count), of which roughly 12% are trucks.
How long is Sth 30 WB over Lrd Thompson Road?
The structure is 148 ft (45.1 m) long with a longest span of 76 ft (23.3 m) and a deck 47 ft wide.
Who owns Sth 30 WB over Lrd Thompson Road?
It is owned by the State Highway Agency.