Klamath County, OR

248 public highway bridges

Klamath County Bridge Snapshot

Klamath County, Oregon contains 248 public highway bridges in the FHWA National Bridge Inventory. Roughly 45.2% are rated “Good,” 44.4% “Fair,” 5.2% “Poor,” and 5.2% 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 OR 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.

248

Total Bridges

45.2%

Good

5.2%

Poor

5.2%

Structurally Deficient

Condition Distribution

Good

45.2% (112)

Fair

44.4% (110)

Poor

5.2% (13)

SD

5.2% (13)

All Bridges (248)

Sort:

PINE CONE DRIVE

Over: WILLIAMSON RIVER

002 MI W OF SPRR, Klamath, OR

Built 1964 Load: 22.0 t ADT: 85

ESPLANADE STREET

Over: USRS CANAL

019 MI S HWY 4 JCT, Klamath, OR

Built 1949 Load: 22.2 t ADT: 6,228

US 97 (HWY 004)

Over: USBR CANAL

011 MI S HWY 50 JCT, Klamath, OR

Built 1959 Load: 22.4 t ADT: 7,049

HILL ROAD

Over: D IRRIGATION CANAL

0005 MI S OF TAYLOR ROAD, Klamath, OR

Built 1979 Load: 22.7 t ADT: 309

ELEVEN TH STREET

Over: A CANAL

0083MI NORTH JCT HWY 20, Klamath, OR

Built 1938 Load: 22.9 t ADT: 6,056

NO. ADAMS POINT RD

Over: IRRIGATION CANAL

009 MI N OF HWY 50, Klamath, OR

Built 1980 Load: 23.0 t ADT: 112

W LANGELL VLY RD

Over: IRRIGATION CANAL

01 MI SE-ST BARNABAS CHR, Klamath, OR

Built 1978 Load: 23.3 t ADT: 180

CHEYNE RD

Over: IRRIGATION CANAL

007 MI SOUTH OF MATNEY RD, Klamath, OR

Built 1974 Load: 23.3 t ADT: 56

OR 140 (HWY 020)

Over: FISH HOLE CREEK

005 MI E BLY, Klamath, OR

Built 1964 Load: 24.3 t ADT: 946

W LANGELL VLY RD

Over: LOST RIVER

AT MALONE DAM, Klamath, OR

Built 1959 Load: 24.3 t ADT: 17

MILITARY CROSSING

Over: WILLIAMSON RIVER

092 MI E OF HWY 97, Klamath, OR

Built 1962 Load: 24.6 t ADT: 38

OR 140 (HWY 020)

Over: FISH HOLE CREEK

007 MI E BLY, Klamath, OR

Built 1964 Load: 24.9 t ADT: 946

SEVENMILE ROAD

Over: DRAIN DITCH

050 MI F/HWY 62 @ FT, Klamath, OR

Built 1972 Load: 25.9 t ADT: 274

OR 140 (HWY 020)

Over: WILD HORSE CREEK

254 MI E KLAMATH FALLS, Klamath, OR

Built 2013 Load: 25.9 t ADT: 1,367

ROYCE MT WAY

Over: CRESENT CR.

023 MI S HWY 18 JCT, Klamath, OR

Built 1980 Load: 26.2 t ADT: 73

SUMMERS LANE

Over: 1-C DRAIN

001 S OF SO SIDE BYPASS, Klamath, OR

Built 1982 Load: 26.2 t ADT: 110

ROAD

Over: POLE CREEK

NO DATA ENTERED, Klamath, OR

Built 1953 Load: 26.3 t ADT: 103

ROAD

Over: JACK CREEK

(ORIG.# 283 - 18.2), Klamath, OR

Built 1975 Load: 26.3 t ADT: 13

ROAD

Over: MOSQUITO CREEK

(ORIG.# 286 - 15.6), Klamath, OR

Built 1973 Load: 26.3 t ADT: 26

OR 39 (HWY 050)

Over: USRS CANAL

014 MI N ORE CALIF LINE, Klamath, OR

Built 1962 Load: 27.2 t ADT: 200

ROAD

Over: SYCAN RIVER

NO DATA ENTERED, Klamath, OR

Built 1966 Load: 27.2 t ADT: 18

ROAD

Over: FOURMILE CREEK

(ORIG.# 3651 - 2.4), Klamath, OR

Built 1963 Load: 27.2 t ADT: 14

WASHBURN WAY

Over: A CANAL

0002 MI S OF ALAMEDA BYPS, Klamath, OR

Built 1963 Load: 27.5 t ADT: 8,896

BERGDORF ROAD

Over: DRAINAGE DITCH

0205 MI N OF N POE VLY RD, Klamath, OR

Built 1976 Load: 27.5 t ADT: 170

CRESCENT CUTOFF RD

Over: LITTLE DESCHUTES RIVER

002 MI W OF HWY 97, Klamath, OR

Built 1962 Load: 27.9 t ADT: 1,497

CRESCENT CUTOFF RD

Over: CRESCENT CR

036 MI E HWY 58, Klamath, OR

Built 1972 Load: 27.9 t ADT: 940

GALE ROAD

Over: LOST RIVER

007 MI E OF W LANGEL RD, Klamath, OR

Built 1985 Load: 27.9 t ADT: 169

DEHLINGER LANE

Over: IRRIGATION CANAL

0001 MI W HILL RD, Klamath, OR

Built 1968 Load: 27.9 t ADT: 721

SILVER LAKE ROAD

Over: NATURAL DRAINAGE CHAN

1898 MI E HWY 97, Klamath, OR

Built 1986 Load: 27.9 t ADT: 241

SILVER LAKE ROAD

Over: JACK CREEK

020.75 MI FROM HWY. 97, Klamath, OR

Built 1986 Load: 27.9 t ADT: 360

DODDS HOLLOW

Over: IRRIGATION CANAL

002 MI N OF MALIN HWY, Klamath, OR

Built 1971 Load: 27.9 t ADT: 491

I O O F CEMETRY RD

Over: IRRIGATION CANAL

007 MI S OF HWY 39, Klamath, OR

Built 1972 Load: 27.9 t ADT: 82

REEDER RD

Over: IRRIGATION CANAL

0165 MI FROM HWY 140, Klamath, OR

Built 1975 Load: 27.9 t ADT: 359

STATE LINE RD

Over: IRRIGATION CANAL

0545 MI E OF HWY 39, Klamath, OR

Built 1969 Load: 27.9 t ADT: 978

SUTY ROAD

Over: IRRIGATION CANAL

007 MI S OF HWY 50, Klamath, OR

Built 1974 Load: 27.9 t ADT: 74

WILSON RD

Over: IRRIGATION CANAL

008 MI S OF HWY 50, Klamath, OR

Built 1978 Load: 27.9 t ADT: 127

MATNEY WAY

Over: IRRIGATION CANAL

AT G CANAL & HILL RO, Klamath, OR

Built 1970 Load: 27.9 t ADT: 111

CAMPBELL RD

Over: PORTION OF N FK SPRAGUE

006 MI WEST OF CAMP SIX R, Klamath, OR

Built 1980 Load: 27.9 t ADT: 44

WASHBURN WAY

Over: IRRIGATION CANAL

0003 MI N OF OLD MID RD, Klamath, OR

Built 1981 Load: 27.9 t ADT: 137

OLD MIDLAND ROAD

Over: IRRIGATION CANAL

043 MI E OF HWY 97, Klamath, OR

Built 1971 Load: 28.8 t ADT: 409

SOUTHSIDE BYPASS

Over: 1 C DITCH

0, Klamath, OR

Built 1979 Load: 28.8 t ADT: 8,234

OR 140 (HWY 020)

Over: PARADISE CREEK

030 MI E BLY, Klamath, OR

Built 1964 Load: 29.8 t ADT: 812

WASHINGTON ST

Over: A CANAL

00.1 MI N OF NINTH ST, Klamath, OR

Built 1978 Load: 30.8 t ADT: 6,356

OR 140 (HWY 020)

Over: S FORK PARADISE CREEK

029 MI E BLY, Klamath, OR

Built 1964 Load: 31.1 t ADT: 812

OR 140 (HWY 020)

Over: USRS B CANAL

098 MI E KLAMATH FALLS, Klamath, OR

Built 1966 Load: 31.4 t ADT: 3,892

S SIDE BYPASS

Over: BNSF & KLAMATH RIVER

KLAMATH FALLS, Klamath, OR

Built 1986 Load: 31.4 t ADT: 8,877

HEMLOCK CR. RD.

Over: HEMLOCK CREEK

1.5 MI N OF OR 58, Klamath, OR

Built 2008 Load: 32.1 t ADT: 73

CHILOQUIN RIDGE RD

Over: SPRAGUE RIVER

001 MI S OF SPRAGUE R RD, Klamath, OR

Built 1958 Load: 32.7 t ADT: 105

ROAD

Over: FISHHOLE CREEK

NO DATA ENTERED, Klamath, OR

Built 1955 Load: 33.6 t ADT: 50

ROAD

Over: FISHHOLE CREEK

NO DATA ENTERED, Klamath, OR

Built 1955 Load: 33.6 t ADT: 50

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 5, 2026