US Bridges

Damassa ST over US Highway 101

Good

Santa Barbara County, California · 05-SB-101-R57.55 · Structure no. 51 0225

Built
1965
60 years old
Condition
Good
inspected May 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
172 ft
4 main spans
Daily traffic
2,500
2011 count
Owner
State
State Highway Agency

About this bridge

Damassa ST over US Highway 101 is a concrete continuous box beam or girders - multiple carrying Damassa ST over US Highway 101 in Santa Barbara County, California. It was built in 1965, so it is 60 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 2,500 vehicles a day, roughly 5% of them trucks, projected to reach 3,133 by 2042. The structure is 172 ft (52.4 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesDamassa ST
CrossesUS Highway 101
Location05-SB-101-R57.55
RouteCounty Highway 0
Coordinates34.61834, -120.18962
Functional classRural Local

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 inspectionMay 2023
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 rating39.7 US tons
Inventory rating30.8 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length172 ft (52.4 m)
Longest span59 ft (18 m)
Deck width37 ft (11.4 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2011)
Projected traffic3,133 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Damassa ST over US Highway 101 built?

It was built in 1965, making it 60 years old in 2025.

What condition is Damassa ST over US Highway 101 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 May 2023.

How much traffic does Damassa ST over US Highway 101 carry?

About 2,500 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is Damassa ST over US Highway 101?

The structure is 172 ft (52.4 m) long with a longest span of 59 ft (18 m) and a deck 37 ft wide.

Who owns Damassa ST over US Highway 101?

It is owned by the State Highway Agency.