US 12 20 45 Mannhe over Salt Creek
FairCook County, Illinois · 0.1 M S Cermak RD · Structure no. 016033900000000
- Built
- 1958
- 67 years old, rebuilt 2003
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 145 ft
- 3 main spans
- Daily traffic
- 23,500
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 12 20 45 Mannhe over Salt Creek is a steel continuous stringer/multi-beam or girder carrying US 12 20 45 Mannhe over Salt Creek in Cook County, Illinois. It was built in 1958 and reconstructed in 2003, so it is 67 years old, older than the Illinois average of 45.3 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 23,500 vehicles a day, roughly 10% of them trucks, projected to reach 23,028 by 2046. The structure is 145 ft (44.3 m) long and 86 ft wide. If it were closed, the detour would be 5 mi (8 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 | 7 Good | Some minor problems. |
| 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 US 12 20 45 Mannhe over Salt Creek built?
It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2003.
What condition is US 12 20 45 Mannhe over Salt 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 September 2024.
How much traffic does US 12 20 45 Mannhe over Salt Creek carry?
About 23,500 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is US 12 20 45 Mannhe over Salt Creek?
The structure is 145 ft (44.3 m) long with a longest span of 49 ft (14.8 m) and a deck 86 ft wide.
Who owns US 12 20 45 Mannhe over Salt Creek?
It is owned by the State Highway Agency.