US Bridges

Mason Street over Mission Creek

Fair

Santa Barbara County, California · NE of Chapala Street · Structure no. 51C0361

Built
2017
8 years old
Condition
Fair
inspected February 2024
Type
Slab
Prestressed Concrete
Length
64 ft
1 main span
Daily traffic
3,300
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mason Street over Mission Creek is a prestressed concrete slab carrying Mason Street over Mission Creek in Santa Barbara County, California. It was built in 2017, so it is 8 years old, younger than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 3,300 vehicles a day, roughly 1% of them trucks, projected to reach 3,900 by 2042. The structure is 64 ft (19.5 m) long and 50 ft wide.

CarriesMason Street
CrossesMission Creek
LocationNE of Chapala Street
RouteCity Street 0
Coordinates34.41239, -119.69106
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length64 ft (19.5 m)
Longest span60 ft (18.2 m)
Deck width50 ft (15.1 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,300 (2022)
Projected traffic3,900 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Mason Street over Mission Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is Mason Street over Mission Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2024.

How much traffic does Mason Street over Mission Creek carry?

About 3,300 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Mason Street over Mission Creek?

The structure is 64 ft (19.5 m) long with a longest span of 60 ft (18.2 m) and a deck 50 ft wide.

Who owns Mason Street over Mission Creek?

It is owned by the City or Municipal Highway Agency.