Niblick Road over US Highway 101
PoorSan Luis Obispo County, California · 05-SLO-101-55.97-PSRS · Structure no. 49 0224
- Built
- 1987
- 38 years old, rebuilt 2001
- Condition
- Poor
- inspected November 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 1,363 ft
- 11 main spans
- Daily traffic
- 30,055
- 2008 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Niblick Road over US Highway 101 is a prestressed concrete continuous box beam or girders - multiple carrying Niblick Road over US Highway 101 in San Luis Obispo County, California. It was built in 1987 and reconstructed in 2001, so it is 38 years old, younger than the California average of 54.8 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 30,055 vehicles a day, roughly 5% of them trucks, projected to reach 51,008 by 2041. The structure is 1,363 ft (415.4 m) long and 79 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Niblick Road over US Highway 101 built?
It was built in 1987, making it 38 years old in 2025. It was reconstructed in 2001.
What condition is Niblick Road over US Highway 101 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 November 2023.
How much traffic does Niblick Road over US Highway 101 carry?
About 30,055 vehicles per day (2008 count), of which roughly 5% are trucks.
How long is Niblick Road over US Highway 101?
The structure is 1,363 ft (415.4 m) long with a longest span of 135 ft (41.1 m) and a deck 79 ft wide.
Who owns Niblick Road over US Highway 101?
It is owned by the City or Municipal Highway Agency.