Yolo County, CA

282 public highway bridges

Yolo County Bridge Snapshot

Yolo County, California contains 282 public highway bridges in the FHWA National Bridge Inventory. Roughly 33.7% are rated “Good,” 36.2% “Fair,” 1.8% “Poor,” and 1.8% 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.

282

Total Bridges

33.7%

Good

1.8%

Poor

1.8%

Structurally Deficient

Condition Distribution

Good

33.7% (95)

Fair

36.2% (102)

Poor

1.8% (5)

SD

1.8% (5)

All Bridges (282)

Sort:

YOLO-COLUSA CO. RD

Over: TEHAMA-COLUSA CANAL

0.7 MI W/O I-5, Yolo, CA

Built 1978 Load: 32.7 t ADT: 625

INTERSTATE 505

Over: COTTONWOOD SLOUGH

03-YOL-505-9.66, Yolo, CA

Built 1959 Load: 33.0 t ADT: 6,000

CR #25

Over: WINTERS CANAL

0.24 MI E/O CR #87, Yolo, CA

Built 1955 Load: 33.7 t ADT: 176

INTERSTATE 505

Over: CHICKAHOMINY SLOUGH

03-YOL-505-3.37, Yolo, CA

Built 1959 Load: 34.0 t ADT: 12,000

INTERSTATE 505

Over: UNION SCHOOL SLOUGH

03-YOL-505-5.71, Yolo, CA

Built 1959 Load: 34.0 t ADT: 12,000

C. R. 87

Over: CACHE CREEK

1.2 MILES N OF S.H. 16, Yolo, CA

Built 1978 Load: 34.0 t ADT: 951

COUNTY ROAD 6

Over: TEHAMA-COLUSA CANAL

0.9 MI W/O I-5, Yolo, CA

Built 1978 Load: 34.3 t ADT: 390

STATE ROUTE 16

Over: RUMSEY CANYON

03-YOL-016-6.36, Yolo, CA

Built 1955 Load: 34.7 t ADT: 1,100

INTERSTATE 505 SB

Over: COUNTY ROAD 12

03-YOL-505-20.11, Yolo, CA

Built 1977 Load: 35.6 t ADT: 7,000

INTERSTATE 505 NB

Over: COUNTY ROAD 12

03-YOL-505-20.11, Yolo, CA

Built 1977 Load: 35.6 t ADT: 7,000

COUNTY ROAD 98

Over: WILLOW SLOUGH

1.3 MI N OF CO ROAD #29, Yolo, CA

Built 1959 Load: 36.6 t ADT: 6,160

INTERSTATE 5 SB

Over: CFNR

03-YOL-005-R8.87, Yolo, CA

Built 1970 Load: 36.9 t ADT: 11,750

INTERSTATE 5 NB

Over: CFNR

03-YOL-005-R8.89, Yolo, CA

Built 1973 Load: 36.9 t ADT: 11,750

COUNTY ROAD 95B

Over: SYCAMORE SLOUGH

0.10 MI S OF ROUTE 45, Yolo, CA

Built 1961 Load: 37.3 t ADT: 25

INTERSTATE 5

Over: CACHE CREEK

03-YOL-005-R11.44, Yolo, CA

Built 1970 Load: 37.6 t ADT: 11,750

COUNTY ROAD 31

Over: DRY SLOUGH

JUST EAST OF C.R. #95, Yolo, CA

Built 1959 Load: 37.6 t ADT: 5,083

C. R. #85B

Over: WINTERS CANAL

0.11 MI S/O S.H. 16, Yolo, CA

Built 2007 Load: 37.6 t ADT: 3,047

INTERSTATE 505

Over: LONG CREEK

03-YOL-505-13.67, Yolo, CA

Built 1977 Load: 42.1 t ADT: 6,500

INTERSTATE 505

Over: LONG CREEK

03-YOL-505-13.66, Yolo, CA

Built 1977 Load: 42.1 t ADT: 6,500

STATE ROUTE 113

Over: WILLOW SLOUGH

03-YOL-113-R4.95, Yolo, CA

Built 1976 Load: 42.4 t ADT: 12,300

INTERSTATE 80 EB

Over: UP RR, BNSF RY, & AMTRAK

03-YOL-080-R10.63-WSAC, Yolo, CA

Built 1970 Load: 45.4 t ADT: 39,500

C.R. 21A

Over: WINTERS CANAL

0.17 MI E/O RD. 85B, Yolo, CA

Built 2006 Load: 47.6 t ADT: 1,050

INTERSTATE 505

Over: CACHE CREEK

03-YOL-505-11.68, Yolo, CA

Built 1977 Load: 48.0 t ADT: 11,000

CR #27

Over: UNION SCHOOL SLOUGH

0.57 MI W/O CR #88, Yolo, CA

Built 1955 Load: 52.2 t ADT: 133

INTERSTATE 505

Over: UNION SCHOOL SLOUGH

03-YOL-505-5.71, Yolo, CA

Built 1980 Load: 53.5 t ADT: 12,000

RAMP/CONNECTOR 505

Over: LONG CREEK

03-YOL-505-13.65, Yolo, CA

Built 1955 Load: 54.8 t ADT: 10,000

COUNTY ROAD 99

Over: WILLOW SLOUGH

1 MI N C.R. #29, Yolo, CA

Built 1975 Load: 55.1 t ADT: 2,830

C.R. 99

Over: DRY SLOUGH

0.34 MI N OF C.R.29, Yolo, CA

Built 1975 Load: 55.7 t ADT: 2,830

COUNTY ROAD #105

Over: WILLOW SLOUGH BYPASS

JUST NORTH OF C.R. # 29, Yolo, CA

Built 1976 Load: 56.4 t ADT: 700

"I" STREET

Over: SACRAMENTO,UP,BNSF,AMTRA

AT SACRAMENTO CO. LINE, Yolo, CA

Built 1911 Load: 60.6 t ADT: 4,938

INTERSTATE 505

Over: COTTONWOOD SLOUGH

03-YOL-505-9.66, Yolo, CA

Built 1980 Load: 60.9 t ADT: 6,000

INTERSTATE 5

Over: SMITH CREEK

03-YOL-005-R16.74, Yolo, CA

Built 1970 Load: 66.1 t ADT: 11,750

US 50-RAMP G17-WB

Over: N/A

03-YOL-050-2.79-WSAC, Yolo, CA

Built 1966 Load: 8.7 t ADT: 23,000

ENTERPRISE BLVD

Over: LAKE WASHINGTON

0.4 MI S OF I-80, Yolo, CA

Built 1976 Load: 11.7 t ADT: 20,000

US 50-RAMP G8-EB

Over: N/A

03-YOL-050-2.86-WSAC, Yolo, CA

Built 1966 Load: 14.3 t ADT: 3,600

COUNTY ROAD 29

Over: DRY SLOUGH

0.77 MI W OF C.R. #98, Yolo, CA

Built 1930 Load: 14.6 t ADT: 645

MONTGOMERY AVENUE

Over: BRANCH PUTAH CREEK

0.1 MI E OF C.R. #103, Yolo, CA

Built 1921 Load: 14.9 t ADT: 1,815

COUNTY ROAD 28

Over: UNION SCHOOL SLOUGH

0.67 MI W OF C.R. #91B, Yolo, CA

Built 1940 Load: 15.6 t ADT: 77

COUNTY ROAD 91B

Over: OAT CREEK

0.36 MI NORTH OF CR #99W, Yolo, CA

Built 1930 Load: 15.6 t ADT: 10

C. R. 87B

Over: COTTONWOOD SLOUGH

0.55 MI S OF C. R. 23, Yolo, CA

Built 1930 Load: 15.9 t ADT: 66

COUNTY ROAD 99W

Over: QUAKER DRAW

0.33 MI NW OF CR 95, Yolo, CA

Built 1916 Load: 16.2 t ADT: 1,000

COUNTY ROAD 99W

Over: ZAMORA DITCH

0.35 MI NW OF CR #12, Yolo, CA

Built 1920 Load: 16.2 t ADT: 1,724

COUNTY ROAD 98

Over: SLOUGH S7

0.09 MI SOUTH OF CR #13, Yolo, CA

Built 1940 Load: 16.2 t ADT: 204

COUNTY ROAD 19

Over: SLOUGH S6

0.27 MI EAST OF I-505, Yolo, CA

Built 1930 Load: 16.2 t ADT: 650

C.R. #25

Over: SOUTH FORK WILLOW SLOUGH

0.29 E OF C.R.93, Yolo, CA

Built 1930 Load: 16.5 t ADT: 345

COUNTY ROAD #11

Over: BRETONA CREEK

0.50 MI E OF C.R. #91B, Yolo, CA

Built 1940 Load: 16.5 t ADT: 75

CR 86A

Over: SOUTH FORK WILLOW SLOUGH

1/2 MI S OF SR 16, Yolo, CA

Built 1923 Load: 16.5 t ADT: 175

COUNTY ROAD 85

Over: GOODNOW SLOUGH

AT INTERSECTION ROAD 15B, Yolo, CA

Built 1925 Load: 16.8 t ADT: 461

C.R. #29

Over: WINTERS CANAL

0.13 MI E OF C.R. #88, Yolo, CA

Built 1920 Load: 16.8 t ADT: 450

COUNTY ROAD 19

Over: SLOUGH S3

0.12 MI WEST OF CR 91B, Yolo, CA

Built 1940 Load: 16.8 t ADT: 650

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