Seminary ST over US 34 Bypass
PoorKnox County, Illinois · 1 MI E of US 150 · Structure no. 048006700000000
- Built
- 1972
- 53 years old
- Condition
- Poor
- inspected January 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 201 ft
- 2 main spans
- Daily traffic
- 7,600
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Seminary ST over US 34 Bypass is a prestressed concrete continuous stringer/multi-beam or girder carrying Seminary ST over US 34 Bypass in Knox County, Illinois. It was built in 1972, so it is 53 years old, older than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 7,600 vehicles a day, roughly 4% of them trucks, projected to reach 7,474 by 2046. The structure is 201 ft (61.3 m) long and 92 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Seminary ST over US 34 Bypass built?
It was built in 1972, making it 53 years old in 2025.
What condition is Seminary ST over US 34 Bypass in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2024.
How much traffic does Seminary ST over US 34 Bypass carry?
About 7,600 vehicles per day (2022 count), of which roughly 4% are trucks.
How long is Seminary ST over US 34 Bypass?
The structure is 201 ft (61.3 m) long with a longest span of 74 ft (22.6 m) and a deck 92 ft wide.
Who owns Seminary ST over US 34 Bypass?
It is owned by the State Highway Agency.