TR 121 over Four Mile Creek
GoodMassac County, Illinois · 1 Mile E of Il 145 · Structure no. 064308400000000
- Built
- 1983
- 42 years old
- Condition
- Good
- inspected December 2021
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 69 ft
- 1 main span
- Daily traffic
- 125
- 2020 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR 121 over Four Mile Creek is a prestressed concrete box beam or girders - multiple carrying TR 121 over Four Mile Creek in Massac County, Illinois. It was built in 1983, so it is 42 years old, younger than the Illinois average of 45.3 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 125 vehicles a day, roughly 6% of them trucks, projected to reach 126 by 2046. The structure is 69 ft (21 m) long and 25 ft wide. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was TR 121 over Four Mile Creek built?
It was built in 1983, making it 42 years old in 2025.
What condition is TR 121 over Four Mile Creek 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 December 2021.
How much traffic does TR 121 over Four Mile Creek carry?
About 125 vehicles per day (2020 count), of which roughly 6% are trucks.
How long is TR 121 over Four Mile Creek?
The structure is 69 ft (21 m) long with a longest span of 66 ft (20.1 m) and a deck 25 ft wide.
Who owns TR 121 over Four Mile Creek?
It is owned by the Town or Township Highway Agency.