TR-71 (aldrich Rd) over S Br Kishwaukee Rv
PoorDeKalb County, Illinois · 2850N 1185E · Structure no. 019440100000000
- Built
- 1950
- 75 years old
- Condition
- Poor
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 169 ft
- 3 main spans
- Daily traffic
- 75
- 2021 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR-71 (aldrich Rd) over S Br Kishwaukee Rv is a steel continuous stringer/multi-beam or girder carrying TR-71 (aldrich Rd) over S Br Kishwaukee Rv in DeKalb County, Illinois. It was built in 1950, so it is 75 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 75 vehicles a day, roughly 7% of them trucks, projected to reach 84 by 2046. The structure is 169 ft (51.6 m) long and 24 ft wide. If it were closed, the detour would be 14.3 mi (23 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was TR-71 (aldrich Rd) over S Br Kishwaukee Rv built?
It was built in 1950, making it 75 years old in 2025.
What condition is TR-71 (aldrich Rd) over S Br Kishwaukee Rv 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 March 2024.
How much traffic does TR-71 (aldrich Rd) over S Br Kishwaukee Rv carry?
About 75 vehicles per day (2021 count), of which roughly 7% are trucks.
How long is TR-71 (aldrich Rd) over S Br Kishwaukee Rv?
The structure is 169 ft (51.6 m) long with a longest span of 64 ft (19.5 m) and a deck 24 ft wide.
Who owns TR-71 (aldrich Rd) over S Br Kishwaukee Rv?
It is owned by the Town or Township Highway Agency.