Structure 35 0351 · San Mateo County, CA

Broadway AVE over U.s. Highway 101

Carries Broadway AVE over U.s. Highway 101, 04-sm-101-16.61-burl.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT208 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

208 ft end to end, longest span 125 ft: about 3 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.

Built201610 years old
Length208.3 ft63.5 m
Daily traffic53,747counted 1999
Last inspectedApril 2023every 24 months

Location

StateCalifornia
CountySan Mateo
Location04-sm-101-16.61-burl
CarriesBroadway AVE
CrossesU.s. Highway 101
Coordinates37.58997, -122.36177

Physical Characteristics

MaterialConcrete Continuous
DesignStringer/Multi-beam
Total Length208.3 ft (63.5 m)
Max Span124.7 ft (38 m)
Deck Width109.9 ft (33.5 m)
Deck Area2127.2 sq m
Main Spans2
Year Built2016

Traffic

Avg Daily Traffic53,747 (1999)
Truck Traffic5%
Lanes On Bridge7
Lanes Under Bridge10

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number35 0351

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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