US Bridges

Bonita School Road over Santa Maria River

Fair

Santa Barbara County, California · 0.3 MI N SR 166 · Structure no. 51C0230

Built
2002
23 years old
Condition
Fair
inspected January 2025
Type
Other
Steel
Length
323 ft
9 main spans
Daily traffic
4,195
2013 count
Owner
County
County Highway Agency

About this bridge

Bonita School Road over Santa Maria River is a steel other carrying Bonita School Road over Santa Maria River in Santa Barbara County, California. It was built in 2002, so it is 23 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 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 4,195 vehicles a day, roughly 23% of them trucks, projected to reach 3,165 by 2042. The structure is 323 ft (98.5 m) long and 26 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesBonita School Road
CrossesSanta Maria River
Location0.3 MI N SR 166
RouteCounty Highway 0
CountySanta Barbara County
StateCalifornia
Coordinates34.98586, -120.51353
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating27.9 US tons

Structure

Structure typeOther
MaterialSteel
DeckSteel plate
Main spans9
Design loadHS 20 + Mod
Structure length323 ft (98.5 m)
Longest span62 ft (18.9 m)
Deck width26 ft (7.8 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,195 (2013)
Projected traffic3,165 by 2042
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Bonita School Road over Santa Maria River built?

It was built in 2002, making it 23 years old in 2025.

What condition is Bonita School Road over Santa Maria River 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 January 2025.

How much traffic does Bonita School Road over Santa Maria River carry?

About 4,195 vehicles per day (2013 count), of which roughly 23% are trucks.

How long is Bonita School Road over Santa Maria River?

The structure is 323 ft (98.5 m) long with a longest span of 62 ft (18.9 m) and a deck 26 ft wide.

Who owns Bonita School Road over Santa Maria River?

It is owned by the County Highway Agency.