Il 78 over Davis Creek
PoorJo Daviess County, Illinois · 0.5 N Carroll County · Structure no. 043004200000000
- Built
- 1982
- 43 years old
- Condition
- Poor
- inspected March 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 110 ft
- 3 main spans
- Daily traffic
- 600
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Il 78 over Davis Creek is a prestressed concrete box beam or girders - multiple carrying Il 78 over Davis Creek in Jo Daviess County, Illinois. It was built in 1982, so it is 43 years old, younger 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 4 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 600 vehicles a day, roughly 13% of them trucks, projected to reach 556 by 2046. The structure is 110 ft (33.6 m) long and 36 ft wide. If it were closed, the detour would be 34.8 mi (56 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 | 7 Good | Some minor problems. |
| 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. |
| 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 Il 78 over Davis Creek built?
It was built in 1982, making it 43 years old in 2025.
What condition is Il 78 over Davis Creek 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 Il 78 over Davis Creek carry?
About 600 vehicles per day (2023 count), of which roughly 13% are trucks.
How long is Il 78 over Davis Creek?
The structure is 110 ft (33.6 m) long with a longest span of 36 ft (10.9 m) and a deck 36 ft wide.
Who owns Il 78 over Davis Creek?
It is owned by the State Highway Agency.