US Bridges

State ST over Mission Creek

Fair

Santa Barbara County, California · SE of Alamar Ave · Structure no. 51C0133

Built
1950
75 years old
Condition
Fair
inspected March 2023
Type
Tee Beam
Concrete
Length
32 ft
1 main span
Daily traffic
18,200
2010 count
Owner
City
City or Municipal Highway Agency

About this bridge

State ST over Mission Creek is a concrete tee beam carrying State ST over Mission Creek in Santa Barbara County, California. It was built in 1950, so it is 75 years old, older 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 5 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 18,200 vehicles a day, roughly 5% of them trucks, projected to reach 29,052 by 2043. The structure is 32 ft (9.8 m) long and 76 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesState ST
CrossesMission Creek
LocationSE of Alamar Ave
RouteCity Street 0
CountySanta Barbara County
StateCalifornia
Coordinates34.43814, -119.72419
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.9 US tons
Inventory rating23.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width76 ft (23.3 m)
Roadway width64 ft (19.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,200 (2010)
Projected traffic29,052 by 2043
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was State ST over Mission Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is State ST 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 March 2023.

How much traffic does State ST over Mission Creek carry?

About 18,200 vehicles per day (2010 count), of which roughly 5% are trucks.

How long is State ST over Mission Creek?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 76 ft wide.

Who owns State ST over Mission Creek?

It is owned by the City or Municipal Highway Agency.