Sth TH 23 over ST Louis River
FairDouglas County, Wisconsin · At Wisc State Line · Structure no. B16015800000000
- Built
- 1919
- 106 years old
- Condition
- Fair
- inspected September 2024
- Type
- Arch - Deck
- Concrete
- Length
- 680 ft
- 6 main spans
- Daily traffic
- 1,650
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Sth TH 23 over ST Louis River is a concrete arch - deck carrying Sth TH 23 over ST Louis River in Douglas County, Wisconsin. It was built in 1919, so it is 106 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 1,650 vehicles a day, projected to reach 1,980 by 2043. The structure is 680 ft (207.4 m) long and 48 ft wide. If it were closed, the detour would be 14.9 mi (24 km).
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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sth TH 23 over ST Louis River built?
It was built in 1919, making it 106 years old in 2025.
What condition is Sth TH 23 over ST Louis River 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 September 2024.
How much traffic does Sth TH 23 over ST Louis River carry?
About 1,650 vehicles per day (2022 count).
How long is Sth TH 23 over ST Louis River?
The structure is 680 ft (207.4 m) long with a longest span of 126 ft (38.5 m) and a deck 48 ft wide.
Who owns Sth TH 23 over ST Louis River?
It is owned by the State Highway Agency.