TR 99 over LA Harpe
PoorPosted for loadHancock County, Illinois · 4.5 MI S Laharpe · Structure no. 034421100000000
- Built
- 1974
- 51 years old
- Condition
- Poor
- inspected January 2025
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 54 ft
- 1 main span
- Daily traffic
- 50
- 2023 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR 99 over LA Harpe is a prestressed concrete box beam or girders - multiple carrying TR 99 over LA Harpe in Hancock County, Illinois. It was built in 1974, so it is 51 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. Its operating status is: posted for load restriction.
It carries about 50 vehicles a day, projected to reach 51 by 2046. The structure is 54 ft (16.6 m) long and 26 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was TR 99 over LA Harpe built?
It was built in 1974, making it 51 years old in 2025.
What condition is TR 99 over LA Harpe 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 2025.
How much traffic does TR 99 over LA Harpe carry?
About 50 vehicles per day (2023 count).
How long is TR 99 over LA Harpe?
The structure is 54 ft (16.6 m) long with a longest span of 52 ft (15.8 m) and a deck 26 ft wide.
Who owns TR 99 over LA Harpe?
It is owned by the Town or Township Highway Agency.