San Francisco County, CA

170 public highway bridges

San Francisco County Bridge Snapshot

San Francisco County, California contains 170 public highway bridges in the FHWA National Bridge Inventory. Roughly 16.5% are rated “Good,” 12.4% “Fair,” 2.4% “Poor,” and 2.4% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in CA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

170

Total Bridges

16.5%

Good

2.4%

Poor

2.4%

Structurally Deficient

Condition Distribution

Good

16.5% (28)

Fair

12.4% (21)

Poor

2.4% (4)

All Bridges (170)

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Publisher	Kiznis Studio
Sources	FHWA National Bridge Inventory, public U.S. government datasets

San Francisco County, CA

San Francisco County Bridge Snapshot

Condition Distribution

All Bridges (170)

US HIGHWAY 101 SB

US HIGHWAY 101 NB

MARINA ONRAMP 101N

80 WB OFF RAMP

80 WB ON RAMP

STATE ROUTE 101 SB

YBI EB 80 OFF RAMP

OAKDALE AVE

TREASURE ISLAND RD

PAUL AVE

23RD STREET

22ND STREET

MARKET ST

MARKET ST

INGERSON AVE

US HIGHWAY 101 NB

EVANS AVE

THIRD STREET

WILLIAMS AVENUE

MARIPOSA ST

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