US Bridges

US Highway 101 NB over UP RR AMTRAK Frady LN

Good

San Luis Obispo County, California · 05-SLO-101-16.17-PBCH · Structure no. 49 0016R

Built
1956
69 years old, rebuilt 1995
Condition
Good
inspected January 2024
Type
Slab
Concrete Continuous
Length
283 ft
7 main spans
Daily traffic
28,000
2009 count
Owner
State
State Highway Agency

About this bridge

US Highway 101 NB over UP RR AMTRAK Frady LN is a concrete continuous slab carrying US Highway 101 NB over UP RR AMTRAK Frady LN in San Luis Obispo County, California. It was built in 1956 and reconstructed in 1995, so it is 69 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 28,000 vehicles a day, roughly 9% of them trucks, projected to reach 49,176 by 2044. The structure is 283 ft (86.2 m) long and 52 ft wide.

CarriesUS Highway 101 NB
CrossesUP RR AMTRAK Frady LN
Location05-SLO-101-16.17-PBCH
RouteU.S. Route 101
Coordinates35.13869, -120.63198
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20 + Mod
Structure length283 ft (86.2 m)
Longest span40 ft (12.2 m)
Deck width52 ft (16 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,000 (2009)
Projected traffic49,176 by 2044
Trucks9%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US Highway 101 NB over UP RR AMTRAK Frady LN built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1995.

What condition is US Highway 101 NB over UP RR AMTRAK Frady LN in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.

How much traffic does US Highway 101 NB over UP RR AMTRAK Frady LN carry?

About 28,000 vehicles per day (2009 count), of which roughly 9% are trucks.

How long is US Highway 101 NB over UP RR AMTRAK Frady LN?

The structure is 283 ft (86.2 m) long with a longest span of 40 ft (12.2 m) and a deck 52 ft wide.

Who owns US Highway 101 NB over UP RR AMTRAK Frady LN?

It is owned by the State Highway Agency.