Merced County, CA

532 public highway bridges

Merced County Bridge Snapshot

Merced County, California contains 532 public highway bridges in the FHWA National Bridge Inventory. Roughly 29.1% are rated “Good,” 52.4% “Fair,” 6.2% “Poor,” and 6.2% 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.

532

Total Bridges

29.1%

Good

6.2%

Poor

6.2%

Structurally Deficient

Condition Distribution

Good

29.1% (155)

Fair

52.4% (279)

Poor

6.2% (33)

SD

6.2% (33)

All Bridges (532)

Sort:

STATE ROUTE 152

Over: SAN JUAN CANAL

10-MER-152-R32.82, Merced, CA

Built 1969 Load: 32.4 t ADT: 16,850

STATE ROUTE 165

Over: SANTA FE CANAL

10-MER-165-12.08, Merced, CA

Built 1958 Load: 32.4 t ADT: 1,800

STATE ROUTE 99 SB

Over: COLLIER ROAD

10-MER-099-R31.93, Merced, CA

Built 1997 Load: 32.4 t ADT: 32,000

STATE ROUTE 99 NB

Over: COLLIER ROAD

10-MER-099-R31.93, Merced, CA

Built 1997 Load: 32.4 t ADT: 32,000

STATE ROUTE 99 SB

Over: DEADMAN CREEK

10-MER-099-5.22, Merced, CA

Built 2015 Load: 32.4 t ADT: 19,500

STATE ROUTE 99 NB

Over: DEADMAN CREEK

10-MER-099-5.22, Merced, CA

Built 2015 Load: 32.4 t ADT: 19,500

STATE ROUTE 99 SB

Over: DUCK SLOUGH

10-MER-099-9.43, Merced, CA

Built 2015 Load: 32.4 t ADT: 19,500

STATE ROUTE 99 NB

Over: DUCK SLOUGH

10-MER-099-9.43, Merced, CA

Built 2015 Load: 32.4 t ADT: 19,500

STATE ROUTE 99 SB

Over: DUCK SLOUGH OVERFLOW

10-MER-099-9.86, Merced, CA

Built 2015 Load: 32.4 t ADT: 19,500

STATE ROUTE 99 NB

Over: DUCK SLOUGH OVERFLOW

10-MER-099-9.86, Merced, CA

Built 2015 Load: 32.4 t ADT: 19,500

STATE ROUTE 59

Over: MERCED RIVER

10-MER-059-27.15, Merced, CA

Built 2009 Load: 32.4 t ADT: 1,425

STATE ROUTE 99 SB

Over: CANAL CREEK

10-MER-099-20.17, Merced, CA

Built 2015 Load: 32.4 t ADT: 19,500

STATE ROUTE 99 NB

Over: CANAL CREEK

10-MER-099-20.19, Merced, CA

Built 2015 Load: 32.4 t ADT: 19,500

ST RTE 99NB ONRAMP

Over: CANAL CREEK

10-MER-099-20.21, Merced, CA

Built 2015 Load: 32.4 t ADT: 10,000

RIVER ROAD

Over: SAN JOAQUIN RIVER OVERFL

0.35 MI E STANISLAUS CO, Merced, CA

Built 1986 Load: 32.4 t ADT: 4,660

SHANKS ROAD

Over: UP RR

AT SR 99 IN DELHI, Merced, CA

Built 1980 Load: 32.4 t ADT: 491

INGOMAR GRADE

Over: LOS BANOS CREEK

0.15 MI NW BADGER FLAT R, Merced, CA

Built 1988 Load: 32.4 t ADT: 4,890

HENRY MILLER AVE

Over: CCID MAIN CANAL

2.0 MI E I-5, Merced, CA

Built 1996 Load: 32.4 t ADT: 2,835

HENRY MILLER AVE

Over: SAN JOAQUIN-KNG RV CANAL

0.3 MI EAST OF I-5, Merced, CA

Built 1996 Load: 32.4 t ADT: 3,020

DICKENSON FERRY RD

Over: EL CAPITAN CANAL

AT THORNTON ROAD, Merced, CA

Built 1979 Load: 32.4 t ADT: 1,200

PLAINSBURG ROAD

Over: DEADMAN CREEK

1.2 MI S LE GRAND RD, Merced, CA

Built 1955 Load: 32.4 t ADT: 1,092

MCKEE ROAD

Over: BEAR CREEK

0.5 MI S OF E. OLIVE, Merced, CA

Built 1988 Load: 32.4 t ADT: 5,391

SHAFFER ROAD

Over: ESCALADIAN CANAL

0.3 MI S SHAW AVE, Merced, CA

Built 1991 Load: 32.4 t ADT: 900

CORTEZ ROAD

Over: HIGH LINE CANAL

SOUTH AVE, Merced, CA

Built 1940 Load: 32.4 t ADT: 727

FRANKLIN ROAD

Over: BLACK RASCAL CREEK

0.7 MI N OF ROUTE 140, Merced, CA

Built 1989 Load: 32.4 t ADT: 1,761

ARBOLEDA DRIVE

Over: BEAR CREEK

SOUTH BEAR CREEK DRIVE, Merced, CA

Built 1987 Load: 32.4 t ADT: 4,312

GUN CLUB RD

Over: CCID MAIN CANAL

0.3 MI E OF SR 33, Merced, CA

Built 1985 Load: 32.4 t ADT: 950

BRITTO ROAD

Over: ARROYO CANAL

0.5 MI S LAGUNA RD, Merced, CA

Built 1986 Load: 32.4 t ADT: 170

REILLY ROAD

Over: OWENS CREEK

0.3 MI E TYLER ROAD, Merced, CA

Built 1985 Load: 32.4 t ADT: 170

CHARLESTON ROAD

Over: OUTSIDE CANAL

0.5 MI E OF S.H. 165, Merced, CA

Built 1985 Load: 32.4 t ADT: 120

VAN CLIEF ROAD

Over: EAST SIDE CANAL

0.25 MI. N. OF THIRD AVE., Merced, CA

Built 2001 Load: 32.4 t ADT: 300

FRANKLIN ROAD

Over: BEAR CREEK

0.6 MI N OF ROUTE 140, Merced, CA

Built 1989 Load: 32.4 t ADT: 1,761

BUCHANAN HOLLOW RD

Over: DUTCHMAN CREEK #2

1.1 MI E WHITE ROCK ROAD, Merced, CA

Built 1930 Load: 32.4 t ADT: 147

WHITE ROCK ROAD

Over: DEADMAN CREEK

1.5 MI N BUCHANAN HLW RD, Merced, CA

Built 1910 Load: 32.4 t ADT: 85

PALM AVENUE

Over: ARROYO CANAL

BARCELLOS ROAD, Merced, CA

Built 1976 Load: 32.4 t ADT: 1,610

ARROYA AVENUE

Over: ARROYO CANAL

0.7 MI S OF S.R. 152, Merced, CA

Built 1980 Load: 32.4 t ADT: 170

DICKENSON FERRY RD

Over: DEANE CANAL

GURR ROAD, Merced, CA

Built 2001 Load: 32.4 t ADT: 800

BLISS ROAD

Over: DUTCHMAN CREEK

0.2 MI S SANDY MUSH ROAD, Merced, CA

Built 1980 Load: 32.4 t ADT: 100

HAMMATT AVENUE

Over: UP RR TRACKS

0.2 MI SOUTH OF SR 99, Merced, CA

Built 1997 Load: 32.4 t ADT: 2,334

OAK AVENUE

Over: BEAR CREEK

0.6 MI E QUINLEY AVENUE, Merced, CA

Built 1993 Load: 32.4 t ADT: 100

LONE TREE ROAD

Over: MARIPOSA CREEK

1.5 MI N SANDYMUSH ROAD, Merced, CA

Built 1993 Load: 32.4 t ADT: 75

SULLIVAN ROAD

Over: CCID MAIN CANAL

50 FT E OF SR140 & SR33, Merced, CA

Built 1996 Load: 32.4 t ADT: 1,101

OAKDALE ROAD

Over: MERCED RIVER

0.9 MI NW OF SHAFFER RD, Merced, CA

Built 2003 Load: 32.4 t ADT: 667

COZZI AVENUE

Over: ARROYO CANAL

1.0 MI S OF SR 152, Merced, CA

Built 1998 Load: 32.4 t ADT: 160

ALMOND AVENUE

Over: LIVINGSTON CANAL

VINE AVENUE, Merced, CA

Built 2007 Load: 32.4 t ADT: 1,130

MARINO WAY

Over: DUCK SLOUGH

0.1 MI NW OF MARIPOSA WY, Merced, CA

Built 2015 Load: 32.4 t ADT: 1,000

MARINO WAY

Over: DUCK SLOUGH OVERFLOW

0.5 MI NW OF MARIPOSA WY, Merced, CA

Built 2015 Load: 32.4 t ADT: 1,000

ALFALFA AVE

Over: MILES CREEK

0.7 MI S OF EAST.MISSION, Merced, CA

Built 2007 Load: 32.4 t ADT: 889

COFFEE (ALFALFA)

Over: MILES CREEK OVERFLOW

0.5 MI S OF EAST.MISSION, Merced, CA

Built 2007 Load: 32.4 t ADT: 899

COFFEE ST

Over: MILES CREEK OVERFLOW

0.1 MI S OF EAST.MISSION, Merced, CA

Built 2007 Load: 32.4 t ADT: 899

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