San Bernardino County, CA

1,465 public highway bridges

San Bernardino County Bridge Snapshot

San Bernardino County, California contains 1,465 public highway bridges in the FHWA National Bridge Inventory. Roughly 29.7% are rated “Good,” 36.5% “Fair,” 5.5% “Poor,” and 5.5% 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.

1,465
Total Bridges
29.7%
Good
5.5%
Poor
5.5%
Structurally Deficient

Condition Distribution

Good
29.7% (435)
Fair
36.5% (535)
Poor
5.5% (80)
SD
5.5% (80)

All Bridges (1,465)

MISSION BLVD

Good

Over: WEST CUCAMONGA WASH

0.6 MI W OF VINEYARD, San Bernardino, CA

Built 1914 Load: 24.5 t ADT: 30,172

ROUTE 40 W BOUND.

Good

Over: WONSAN DITCH

08-SBD-040-R3.81, San Bernardino, CA

Built 1964 Load: 24.6 t ADT: 9,850

STATE ROUTE 210 WB

Good

Over: EAST TWIN CREEK CHANNEL

08-SBD-210-R24.76-SBD, San Bernardino, CA

Built 1968 Load: 24.6 t ADT: 54,500

STATE HIGHWAY 330

Good

Over: CITY CREEK

08-SBD-330-32.51, San Bernardino, CA

Built 1947 Load: 24.9 t ADT: 11,000

STATE ROUTE 142

Good

Over: CARBON CANYON

08-SBD-142-0.18, San Bernardino, CA

Built 1928 Load: 25.9 t ADT: 13,600

EB 10 OFF RAMP

Good

Over: OAK GLEN CREEK

08-SBD-010-R36.90-YUCP, San Bernardino, CA

Built 1965 Load: 25.9 t ADT: 12,377

INTERSTATE 40

Good

Over: ICE HOUSE DITCH

08-SBD-040-144.38-NED, San Bernardino, CA

Built 1967 Load: 26.2 t ADT: 7,200

CAJON BLVD

Good

Over: BRUSH CREEK

1.4 MI N SWARTOUT CYN RD, San Bernardino, CA

Built 1930 Load: 26.2 t ADT: 1,166

MOUNTAIN SPRINGS R

Good

Over: BUCKHORN WASH

0.1 MI NW SLVR LK PKWY, San Bernardino, CA

Built 1972 Load: 26.2 t ADT: 1,583

BEEKLEY ROAD

Good

Over: CALIFORNIA AQUEDUCT

0.6 MI S OF PALMDALE RD, San Bernardino, CA

Built 1971 Load: 26.2 t ADT: 44

INTERSTATE 10 WB

Good

Over: SANTA ANA RIVER

08-SBD-010-R23.83-COL, San Bernardino, CA

Built 1937 Load: 26.6 t ADT: 102,000

STATE ROUTE 66

Good

Over: LYTLE CREEK CHANNEL

08-SBD-066-21.30-SBD, San Bernardino, CA

Built 1945 Load: 26.6 t ADT: 21,500

INTERSTATE 10

Good

Over: BNSF, MISSION STORM CHNL

08-SBD-010-27.64-LMLN, San Bernardino, CA

Built 1962 Load: 26.6 t ADT: 102,500

INTERSTATE 10 EB

Good

Over: WARM CREEK

08-SBD-010-R23.60-COL, San Bernardino, CA

Built 1970 Load: 26.6 t ADT: 103,000

INTERSTATE 15 SB

Good

Over: DOCK DITCH

08-SBD-015-R121.43, San Bernardino, CA

Built 1965 Load: 26.9 t ADT: 22,000

INTERSTATE 10

Good

Over: DAY CANYON CHANNEL

08-SBD-010-10.12-ONT, San Bernardino, CA

Built 1943 Load: 26.9 t ADT: 226,300

INTERSTATE 15 NB

Good

Over: DOCK DITCH

08-SBD-015-R121.43, San Bernardino, CA

Built 1965 Load: 27.2 t ADT: 22,000

INTERSTATE 10 EB

Good

Over: CUCAMONGA WASH

08-SBD-010-6.70-ONT, San Bernardino, CA

Built 1953 Load: 27.5 t ADT: 126,000

INTERSTATE 15

Good

Over: CEMENT COMPANY ROAD

08-SBD-015-46.40-VCTV, San Bernardino, CA

Built 1958 Load: 27.9 t ADT: 59,000

INLAND EMPIRE BLVD

Good

Over: CUCAMONGA CREEK

0.4 MI W ARCHIBALD AVE, San Bernardino, CA

Built 1967 Load: 27.9 t ADT: 3,000

INTERSTATE 15 SB

Good

Over: CLARK MOUNTAIN DITCH

08-SBD-015-167.99L, San Bernardino, CA

Built 1963 Load: 28.2 t ADT: 18,500

INTERSTATE 15 NB

Good

Over: CLARK MOUNTAIN DITCH

08-SBD-015-167.99R, San Bernardino, CA

Built 1963 Load: 28.2 t ADT: 18,500

INTERSTATE 15 NB

Good

Over: PANO DITCH

08-SBD-015-R138.73, San Bernardino, CA

Built 1965 Load: 28.5 t ADT: 22,000

STATE ROUTE 38

Good

Over: SANTA ANA RIVER

08-SBD-038-30.86, San Bernardino, CA

Built 1960 Load: 29.2 t ADT: 2,500

STATE ROUTE 18

Good

Over: HILLSIDE

08-SBD-018-R11.90, San Bernardino, CA

Built 1966 Load: 29.2 t ADT: 16,800

INTERSTATE 215 NB

Good

Over: DEVIL CREEK

08-SBD-215-12.82-SBD, San Bernardino, CA

Built 1958 Load: 29.5 t ADT: 35,500

INTERSTATE 15 SB

Good

Over: MOJAVE RIVER OVERFLOW

08-SBD-015-R120.05, San Bernardino, CA

Built 1964 Load: 29.5 t ADT: 22,000

INTERSTATE 15 NB

Good

Over: MOJAVE RIVER OVERFLOW

08-SBD-015-R120.05, San Bernardino, CA

Built 1964 Load: 29.5 t ADT: 22,000

INTERSTATE 40

Good

Over: AIRPORT WASH

08-SBD-040-145.61, San Bernardino, CA

Built 1957 Load: 29.8 t ADT: 7,200

STATE ROUTE 58 WB

Good

Over: AGATE ROAD

08-SBD-058-R32.96-BSW, San Bernardino, CA

Built 1997 Load: 29.8 t ADT: 6,750

ETIWANDA AVE

Good

Over: UP RR & AMTRAK

0.2 MI S I-10, San Bernardino, CA

Built 1964 Load: 29.8 t ADT: 45,000

INTERSTATE 215 SB

Good

Over: DEVIL CREEK

08-SBD-215-12.82-SBD, San Bernardino, CA

Built 1958 Load: 30.1 t ADT: 35,500

STATE ROUTE 18

Good

Over: HILLSIDE

08-SBD-018-R12.68, San Bernardino, CA

Built 1969 Load: 30.1 t ADT: 16,800

STATE HIGHWAY 138

Good

Over: SEELEY CREEK

08-SBD-138-R29.96, San Bernardino, CA

Built 1970 Load: 30.1 t ADT: 1,500

NAT TRAILS HWY

Good

Over: TEVIOT DITCH

22.5 MI E KELBAKER RD, San Bernardino, CA

Built 1948 Load: 30.1 t ADT: 502

FORT IRWIN ROAD

Good

Over: STORM DRAINAGE

0.3 MI. N OF NASA ROAD, San Bernardino, CA

Built 1986 Load: 30.1 t ADT: 6,760

FORT IRWIN RD

Good

Over: STORM DRAINAGE

0.5 MI. NE CABLE RTE, San Bernardino, CA

Built 1986 Load: 30.1 t ADT: 6,760

INTERSTATE 15 SB

Good

Over: DRY LAKE DITCH

08-SBD-015-180.93, San Bernardino, CA

Built 1963 Load: 30.5 t ADT: 19,000

STATE ROUTE 58 EB

Good

Over: AGATE ROAD

08-SBD-058-R32.96-BSW, San Bernardino, CA

Built 1997 Load: 30.5 t ADT: 6,750

PARK MOABI RD

Good

Over: BNSF RY & AMTRAK

100' N OF RTE I-40, San Bernardino, CA

Built 1966 Load: 30.5 t ADT: 522

VALLEY OF THE FALL

Good

Over: MILL CREEK

1.3 MI E OF ROUTE 38, San Bernardino, CA

Built 1977 Load: 30.5 t ADT: 1,683

W10-S15 CONN RAMP

Good

Over: DAY CANYON CHANNEL

08-SBD-010-10.12-ONT, San Bernardino, CA

Built 1975 Load: 30.8 t ADT: 29,000

STATE ROUTE 18

Good

Over: WATERMAN CANYON RD

08-SBD-018-R13.29, San Bernardino, CA

Built 1969 Load: 30.8 t ADT: 16,800

MISSION BLVD

Good

Over: SAN ANTONIO CREEK CHAN

50' E OF L.A. COUNTY LINE, San Bernardino, CA

Built 1929 Load: 30.8 t ADT: 20,177

INTERSTATE 15 SB

Good

Over: IVANPAH DITCH

08-SBD-015-179.39, San Bernardino, CA

Built 1963 Load: 31.1 t ADT: 1

INTERSTATE 15 NB

Good

Over: DRY LAKE DITCH

08-SBD-015-180.94, San Bernardino, CA

Built 1963 Load: 31.1 t ADT: 19,000

INTERSTATE 10 EB

Good

Over: ETWNDA-SN SEVN FL CN CHN

08-SBD-010-11.64, San Bernardino, CA

Built 1966 Load: 31.1 t ADT: 95,000

INTERSTATE 40

Good

Over: ICE HOUSE DITCH

08-SBD-040-144.38-NED, San Bernardino, CA

Built 1957 Load: 31.1 t ADT: 7,200

INTERSTATE 15 NB

Good

Over: WHEATON SPRINGS WASH

08-SBD-015-174.71, San Bernardino, CA

Built 1963 Load: 31.4 t ADT: 18,500

HIGHLAND AVE

Good

Over: EAST TWIN CREEK CHANNEL

0.5 MI E WATERMAN AVE, San Bernardino, CA

Built 1961 Load: 31.4 t ADT: 23,460

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

Related

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