Lockport-Plainfiel over I- 55
FairWill County, Illinois · 2.0 M S of Il 126 · Structure no. 099017600000000
- Built
- 1958
- 67 years old, rebuilt 2002
- Condition
- Fair
- inspected December 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 188 ft
- 4 main spans
- Daily traffic
- 12,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Lockport-Plainfiel over I- 55 is a steel continuous stringer/multi-beam or girder carrying Lockport-Plainfiel over I- 55 in Will County, Illinois. It was built in 1958 and reconstructed in 2002, 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 12,000 vehicles a day, roughly 6% of them trucks, projected to reach 20,448 by 2046. The structure is 188 ft (57.3 m) long and 31 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Lockport-Plainfiel over I- 55 built?
It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2002.
What condition is Lockport-Plainfiel over I- 55 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 December 2024.
How much traffic does Lockport-Plainfiel over I- 55 carry?
About 12,000 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is Lockport-Plainfiel over I- 55?
The structure is 188 ft (57.3 m) long with a longest span of 55 ft (16.9 m) and a deck 31 ft wide.
Who owns Lockport-Plainfiel over I- 55?
It is owned by the State Highway Agency.