Alameda County, CA

800 public highway bridges

Alameda County Bridge Snapshot

Alameda County, California contains 800 public highway bridges in the FHWA National Bridge Inventory. Roughly 15.4% are rated “Good,” 25.6% “Fair,” 5% “Poor,” and 5% 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.

800

Total Bridges

15.4%

Good

5%

Poor

5%

Structurally Deficient

Condition Distribution

Good

15.4% (123)

Fair

25.6% (205)

Poor

5% (40)

SD

5% (40)

All Bridges (800)

Sort:

INTERSTATE 880

Over: JACKSON, MADISON, OAK

04-ALA-880-31.07-OAK, Alameda, CA

Built 1957 ADT: 17,300

INTERSTATE 880

Over: RT260,MLK,MKT,BRDWY,WASH

04-ALA-880-31.36-OAK, Alameda, CA

Built 1953 ADT: 13,300

S238-E580 CONNECTR

Over: CASTRO VALLEY BLVD

04-ALA-238-R14.47, Alameda, CA

Built 1988 ADT: 5,000

INTERSTATE 580

Over: CASTRO VALLEY BLVD

04-ALA-580-R30.56, Alameda, CA

Built 1989 ADT: 2,000

SAN RAMON ROAD

Over: INTERSTATE 580

04-ALA-580-R21.43-PLE, Alameda, CA

Built 1977 ADT: 207,000

STATE ROUTE 238 SB

Over: SR 185 (14TH STREET)

04-ALA-238-14.93, Alameda, CA

Built 1994 ADT: 18,000

BAY ST

Over: STATE ROUTE 13

04-ALA-013-13.71-BER, Alameda, CA

Built 1954 ADT: 46,400

I 580 EB

Over: I 238 NB,CONNS,CASTRO VL

04-ALA-580-R30.59, Alameda, CA

Built 1988 ADT: 79,300

STATE ROUTE 238

Over: HESPERIAN BLVD

04-ALA-238-16.28, Alameda, CA

Built 1956 ADT: 9,300

STATE ROUTE 238

Over: HESPERIAN BLVD

04-ALA-238-16.28, Alameda, CA

Built 2010 ADT: 9,300

STATE ROUTE 238

Over: ASHLAND AVE

04-ALA-238-15.67, Alameda, CA

Built 1956 ADT: 3,500

MORAGA AVENUE WB

Over: S13-MORAGA AV OFF RAMP

04-ALA-013-8.32-OAK, Alameda, CA

Built 1964 ADT: 15,000

STATE ROUTE 13 SB

Over: MORAGA AVE

04-ALA-013-8.28-OAK, Alameda, CA

Built 1964 ADT: 10,000

STATE ROUTE 13 NB

Over: MORAGA AVE

04-ALA-013-8.27-OAK, Alameda, CA

Built 1964 ADT: 20,000

TENNYSON ROAD

Over: INTERSTATE 880

04-ALA-880-15.65-HAY, Alameda, CA

Built 1958 ADT: 211,000

FREMONT BOULEVARD

Over: INTERSTATE 880

04-ALA-880-3.25-FMT, Alameda, CA

Built 1995 ADT: 161,000

STATE ROUTE 84

Over: INTERSTATE 880

04-ALA-084-R5.98-FMT, Alameda, CA

Built 1984 ADT: 189,000

PEDESTRIAN WALKWAY

Over: STATE ROUTE 13

04-ALA-013-7.91-OAK, Alameda, CA

Built 1956 ADT: 114,000

INTERSTATE 880

Over: WHIPPLE ROAD

04-ALA-880-13.67-HAY, Alameda, CA

Built 1956 ADT: 45,196

S880-WHIPPLE RD OF

Over: WHIPPLE ROAD

04-ALA-880-13.67-HAY, Alameda, CA

Built 1993 ADT: 45,196

WHIPPLE RD-N880 ON

Over: WHIPPLE ROAD

04-ALA-880-13.67-HAY, Alameda, CA

Built 1993 ADT: 45,196

LINCOLN AVE

Over: STATE ROUTE 13

04-ALA-013-6.47-OAK, Alameda, CA

Built 1956 ADT: 102,000

CENTRAL AVE SB

Over: INTERSTATE 880

04-ALA-880-8.25-FMT, Alameda, CA

Built 1993 ADT: 197,000

CENTRAL AVE NB

Over: INTERSTATE 880

04-ALA-880-8.24-FMT, Alameda, CA

Built 1993 ADT: 197,000

UP RR, AMTRAK, ACE

Over: INTERSTATE 880

04-ALA-880-8.54-FMT, Alameda, CA

Built 1995 ADT: 187,000

SR 84 (THORNTON)

Over: INTERSTATE 880

04-ALA-084-6.93-FMT, Alameda, CA

Built 1997 ADT: 200,000

MOWRY AVENUE WB

Over: INTERSTATE 880

04-ALA-880-7.19-FMT, Alameda, CA

Built 1994 ADT: 187,000

MOWRY AVENUE EB

Over: INTERSTATE 880

04-ALA-880-7.18-FMT, Alameda, CA

Built 1994 ADT: 187,000

AUTO MALL PARKWAY

Over: INTERSTATE 880

04-ALA-880-4.71-FMT, Alameda, CA

Built 1994 ADT: 161,000

ROUTE 580 EB

Over: SAN PBLO, ADLN, MGNO,PER

04-ALA-580-45.74-OAK, Alameda, CA

Built 1961 ADT: 23,000

ROUTE 580 WB

Over: ADELINE, SAN PABLO,PERAL

04-ALA-580-45.74-OAK, Alameda, CA

Built 1961 ADT: 14,500

INTERSTATE 580 WB

Over: S580-N123 CONNECTOR RAMP

04-ALA-580-45.99-OAK, Alameda, CA

Built 1961 ADT: 6,700

BARTD

Over: STATE ROUTE 77

04-ALA-077-0.32-OAK, Alameda, CA

Built 1950 ADT: 21,500

SAN LEANDRO BLVD

Over: STATE ROUTE 77

04-ALA-077-0.29-OAK, Alameda, CA

Built 1950 ADT: 21,500

ROUTE 580

Over: PIEDMONT, BROADWAY, RICH

04-ALA-580-44.51-OAK, Alameda, CA

Built 1961 ADT: 24,025

PG&E PIPELINE

Over: INTERSTATE 880

04-ALA-880-8.52-FMT, Alameda, CA

Built 1958 ADT: 187,000

MACARTHUR BLVD

Over: INTERSTATE 580

04-ALA-580-44.32-OAK, Alameda, CA

Built 1961 ADT: 201,000

ROUTE 580

Over: INTERSTATE 580

04-ALA-580-44.28-OAK, Alameda, CA

Built 1961 ADT: 14,069

S580-OAKLAND AV OF

Over: HARRISON STREET

04-ALA-580-44.33-OAK, Alameda, CA

Built 1961 ADT: 20,595

HARRISON&OAKLAND-N

Over: HARRISON STREET

04-ALA-580-44.33-OAK, Alameda, CA

Built 1961 ADT: 20,595

CHETWOOD ST

Over: INTERSTATE 580

04-ALA-580-44.07-OAK, Alameda, CA

Built 1961 ADT: 211,000

FLORESTA BLVD

Over: INTERSTATE 880

04-ALA-880-21.56-SLN, Alameda, CA

Built 1993 ADT: 217,000

INTERSTATE 680

Over: SR 238 (MISSION BLVD)

04-ALA-680-R6.38-FMT, Alameda, CA

Built 1963 ADT: 27,000

ANDRADE ROAD

Over: INTERSTATE 680

04-ALA-680-R9.71, Alameda, CA

Built 1963 ADT: 141,000

INTERSTATE 580

Over: WEBSTER STREET

04-ALA-580-44.81-OAK, Alameda, CA

Built 1961 ADT: 18,300

E580-WEBSTER&BROAD

Over: WEBSTER STREET

04-ALA-580-44.81-OAK, Alameda, CA

Built 1961 ADT: 18,300

INTERSTATE 580

Over: TELEGRAPH AVE

04-ALA-580-45.03-OAK, Alameda, CA

Built 1961 ADT: 23,728

INTERSTATE 580

Over: ST RTE 24-I 980

04-ALA-580-45.15-OAK, Alameda, CA

Built 1961 ADT: 152,300

ROUTE 580

Over: MARTIN LUTHER KING JR WY

04-ALA-580-45.25-OAK, Alameda, CA

Built 1961 ADT: 36,028

WEST ST-S580 ON RA

Over: MARTIN LUTHER KING JR WY

04-ALA-580-45.25-OAK, Alameda, CA

Built 1961 ADT: 36,028

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026