Structure 35C0185 · San Mateo County, CA

Garage Connector over North/south Garage

Carries Garage Connector over North/south Garage, 0.3 Mi E/o N. Macdonnell.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT481 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 7/9

481 ft end to end, longest span 176 ft: about 7 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 multi-beam bridge.

Built200026 years old
Length481.3 ft146.7 m
Daily traffic200counted 2007
Last inspectedJanuary 2024every 24 months

Location

StateCalifornia
CountySan Mateo
Location0.3 Mi E/o N. Macdonnell
CarriesGarage Connector
CrossesNorth/south Garage
Coordinates37.61425, -122.39254

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length481.3 ft (146.7 m)
Max Span176.2 ft (53.7 m)
Deck Width33.8 ft (10.3 m)
Deck Area1511.0 sq m
Main Spans6
Year Built2000

Traffic

Avg Daily Traffic200 (2007)
Truck Traffic5%
Lanes On Bridge2
Lanes Under Bridge12

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number35C0185

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.

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