TR 109 over Eliza Lake Ditch
FairPosted for loadMercer County, Illinois · SW-2-T14NR6W · Structure no. 066501500000000
- Built
- 1986
- 39 years old
- Condition
- Fair
- inspected October 2023
- Type
- Slab
- Wood or Timber
- Length
- 50 ft
- 3 main spans
- Daily traffic
- 50
- 2024 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR 109 over Eliza Lake Ditch is a wood or timber slab carrying TR 109 over Eliza Lake Ditch in Mercer County, Illinois. It was built in 1986, so it is 39 years old, younger 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. Its operating status is: posted for load restriction.
It carries about 50 vehicles a day, roughly 36% of them trucks, projected to reach 51 by 2046. The structure is 50 ft (15.2 m) long and 26 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was TR 109 over Eliza Lake Ditch built?
It was built in 1986, making it 39 years old in 2025.
What condition is TR 109 over Eliza Lake Ditch 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 October 2023.
How much traffic does TR 109 over Eliza Lake Ditch carry?
About 50 vehicles per day (2024 count), of which roughly 36% are trucks.
How long is TR 109 over Eliza Lake Ditch?
The structure is 50 ft (15.2 m) long with a longest span of 26 ft (7.9 m) and a deck 26 ft wide.
Who owns TR 109 over Eliza Lake Ditch?
It is owned by the Town or Township Highway Agency.