Structure 51 0162R · Santa Barbara County, CA

US Highway 101 NB over Maria Ygnacio Creek

Carries US Highway 101 NB over Maria Ygnacio Creek, 05-sb-101-20.95.

Overall conditionPoor

Set by its lowest-rated component: Deck and Substructure at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructure7/9 · Good
Substructuresets the rating4/9 · Poor
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT145 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 7/9Substructure 4/9 · sets the rating

145 ft end to end, longest span 49 ft: about 2 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a tee-beam bridge.

Built1961rebuilt 1989
Length145.0 ft44.2 m
Daily traffic60,500counted 2009
Last inspectedFebruary 2025every 24 months

Location

StateCalifornia
CountySanta Barbara
Location05-sb-101-20.95
CarriesUS Highway 101 NB
CrossesMaria Ygnacio Creek
Coordinates34.44181, -119.80481

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length145.0 ft (44.2 m)
Max Span48.9 ft (14.9 m)
Deck Width54.8 ft (16.7 m)
Deck Area738.1 sq m
Main Spans3
Year Built1961 (reconstructed 1989)

Traffic

Avg Daily Traffic60,500 (2009)
Truck Traffic4%
Lanes On Bridge3

Inspection & Ownership

Last InspectionFebruary 2025
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number51 0162R

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

Nearby Bridges