US Bridges

Alvin Ave over US HWY 101 & Bradley Chn

Good

Santa Barbara County, California · 05-SB-101-89.13-SMRA · Structure no. 51 0040

Built
1972
53 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
306 ft
3 main spans
Daily traffic
48,000
2010 count
Owner
State
State Highway Agency

About this bridge

Alvin Ave over US HWY 101 & Bradley Chn is a prestressed concrete continuous stringer/multi-beam or girder carrying Alvin Ave over US HWY 101 & Bradley Chn in Santa Barbara County, California. It was built in 1972, so it is 53 years old, younger 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 48,000 vehicles a day, roughly 1% of them trucks, projected to reach 80,712 by 2046. The structure is 306 ft (93.3 m) long and 76 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesAlvin Ave
CrossesUS HWY 101 & Bradley Chn
Location05-SB-101-89.13-SMRA
RouteCity Street 0J083
CountySanta Barbara County
StateCalifornia
Coordinates34.96021, -120.41886
Functional classUrban Collector

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating25.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length306 ft (93.3 m)
Longest span109 ft (33.2 m)
Deck width76 ft (23.2 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48,000 (2010)
Projected traffic80,712 by 2046
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and waterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Alvin Ave over US HWY 101 & Bradley Chn built?

It was built in 1972, making it 53 years old in 2025.

What condition is Alvin Ave over US HWY 101 & Bradley Chn 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 December 2024.

How much traffic does Alvin Ave over US HWY 101 & Bradley Chn carry?

About 48,000 vehicles per day (2010 count), of which roughly 1% are trucks.

How long is Alvin Ave over US HWY 101 & Bradley Chn?

The structure is 306 ft (93.3 m) long with a longest span of 109 ft (33.2 m) and a deck 76 ft wide.

Who owns Alvin Ave over US HWY 101 & Bradley Chn?

It is owned by the State Highway Agency.