Ill 29 over Thenius Creek
FairPeoria County, Illinois · .25 MI N of Sparland · Structure no. 062005600000000
- Built
- 1947
- 78 years old, rebuilt 1993
- Condition
- Fair
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 137 ft
- 3 main spans
- Daily traffic
- 3,250
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 29 over Thenius Creek is a steel continuous stringer/multi-beam or girder carrying Ill 29 over Thenius Creek in Peoria County, Illinois. It was built in 1947 and reconstructed in 1993, so it is 78 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 3,250 vehicles a day, roughly 14% of them trucks, projected to reach 3,283 by 2046. The structure is 137 ft (41.8 m) long and 43 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ill 29 over Thenius Creek built?
It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1993.
What condition is Ill 29 over Thenius 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 November 2023.
How much traffic does Ill 29 over Thenius Creek carry?
About 3,250 vehicles per day (2021 count), of which roughly 14% are trucks.
How long is Ill 29 over Thenius Creek?
The structure is 137 ft (41.8 m) long with a longest span of 52 ft (15.8 m) and a deck 43 ft wide.
Who owns Ill 29 over Thenius Creek?
It is owned by the State Highway Agency.