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)

ROAD

Good

Over: ANNIE CREEK

(ORIG.# 6237 - 0.2), Klamath, OR

Built 1990 Load: 43.6 t ADT: 6

SPRAGUE RIVER RD

Good

Over: SPRAGUE RIVER

AT SKEEN RANCH RD, Klamath, OR

Built 2007 Load: 44.1 t ADT: 842

US 97 (HWY 004)

Good

Over: UPRR

002 MI N HWY 420 JCT, Klamath, OR

Built 1994 Load: 44.4 t ADT: 5,058

OR 58 (HWY 018)

Good

Over: CRESCENT CREEK

130 W HWY 4 JCT, Klamath, OR

Built 2006 Load: 44.4 t ADT: 1,603

OR 58 (HWY 018)

Good

Over: LITTLE DESCHUTES RIVER

043 MI W HWY 4, Klamath, OR

Built 1995 Load: 45.0 t ADT: 1,603

OLD MIDLAND ROAD

Good

Over: IRRIGATION CANAL

037 MI E OF HWY 97, Klamath, OR

Built 1998 Load: 45.0 t ADT: 524

ROAD

Good

Over: WILLIAMSON RIVER

(ORIG.# 9743 - 0.5), Klamath, OR

Built 1976 Load: 45.4 t ADT: 40

SEVENMILE ROAD

Good

Over: Blue Spring Ditch

020 MI WEST OF WEED ROAD, Klamath, OR

Built 1998 Load: 45.4 t ADT: 371

REEDER RD

Good

Over: LOST R DIVERSION CHANNEL

001 MI N OF HILL ROAD, Klamath, OR

Built 1981 Load: 45.4 t ADT: 321

39 S 14 E 25.00:

Good

Over: BARNES VALLEY CREEK

10.3 miles SE of Bonanza, Klamath, OR

Built 1965 Load: 45.7 t ADT: 25

39 S 14 E 27.00:

Good

Over: PITCH LOG CREEK

10.3 miles SE of Bonanza, Klamath, OR

Built 1965 Load: 46.0 t ADT: 25

S. SEVENMILE RD

Good

Over: SEVENMILE CREEK

(ORIG.# 323 - 3.3), Klamath, OR

Built 2018 Load: 46.0 t ADT: 14

OR 58 (HWY 018)

Good

Over: ODELL CREEK

059 MI E LANE KLAMATH LN, Klamath, OR

Built 2006 Load: 46.0 t ADT: 2,202

LOOSELY ROAD

Good

Over: WOOD RIVER

007 MI E OF WEED ROAD, Klamath, OR

Built 1995 Load: 46.7 t ADT: 66

S POE VALLEY ROAD

Good

Over: LOST RIVER

AT OLENE GAP, Klamath, OR

Built 2000 Load: 48.1 t ADT: 1,014

HOMEDALE RD

Good

Over: NO 1 DRAIN DITCH

0055 MI S OF HENLEY RD, Klamath, OR

Built 1979 Load: 48.1 t ADT: 384

OR 39 (HWY 050)

Good

Over: USRS CANAL A CANAL

016 MI S HWY 50 & 20INTER, Klamath, OR

Built 1997 Load: 48.6 t ADT: 6,999

NO DATA ENTERED

Good

Over: BIG MARSH CREEK

NO DATA ENTERED, Klamath, OR

Built 2003 Load: 49.9 t ADT: 20

OR 62 (HWY 022)

Good

Over: CROOKED CREEK

055 MI S FORT KLAMATH, Klamath, OR

Built 2004 Load: 50.2 t ADT: 1,176

TOWNSHIP ROAD

Good

Over: KLAMATH STRAITS DRAINAGE

041 MI E OF HWY 97, Klamath, OR

Built 2010 Load: 50.2 t ADT: 321

REEDER RD

Good

Over: IRRIGATION CANAL

009 MI FROM HWY 140, Klamath, OR

Built 1999 Load: 50.5 t ADT: 382

SILVER LAKE ROAD

Good

Over: WILLIAMSON RV

0921 MI EAST HWY 97, Klamath, OR

Built 1986 Load: 51.5 t ADT: 337

EBERLEIN RD

Good

Over: A CANAL

00.2 MI W OF ALAMEDA BYPA, Klamath, OR

Built 2003 Load: 52.8 t ADT: 1,800

ROAD

Good

Over: NORTH FORK SPRAGUE RIVER

NO DATA ENTERED, Klamath, OR

Built 2010 Load: 53.5 t ADT: 40

HWY 420

Good

Over: USRS DIVERSION CANAL

036 MI S HWY 20 JCT, Klamath, OR

Built 2006 Load: 53.5 t ADT: 1,702

US 97 (HWY 004)

Good

Over: ALGOMA LOG POND

070 MI N HWY 50 JCT., Klamath, OR

Built 2005 Load: 53.8 t ADT: 6,622

NO DATA ENTERED

Good

Over: LITTLE DESCHUTES RIVER

NO DATA ENTERED, Klamath, OR

Built 1950 Load: 54.4 t ADT: 50

OR 140 (HWY 020)

Good

Over: BUCK CREEK

22.2 MI E KLAMATH FALLS, Klamath, OR

Built 2018 Load: 56.1 t ADT: 2,317

E LANGELL VLY RD

Good

Over: DRAIN DITCH

005 MI N OF GIFT RD, Klamath, OR

Built 1976 Load: 56.4 t ADT: 193

HENLEY ROAD

Good

Over: N01 DRAINAGE DITCH

0015 MI E OF HOMEDALE RD, Klamath, OR

Built 1974 Load: 57.2 t ADT: 409

WALL ST. BRIDGE

Good

Over: A CANAL

0.1 M W OF ESPLANADE AV, Klamath, OR

Built 2003 Load: 59.0 t ADT: 723

US 97 (HWY 004)

Good

Over: BARKLEY SPRINGS IRR CNL

053 MI S HWY 427 JCT, Klamath, OR

Built 2005 Load: 60.9 t ADT: 6,622

US 97 (HWY 004)

Good

Over: SPRING CREEK

051 MI N CHILOQUIN JCT, Klamath, OR

Built 2005 Load: 64.8 t ADT: 4,775

ROAD

Good

Over: PARADISE CREEK

NO DATA ENTERED, Klamath, OR

Built 1967 Load: 75.4 t ADT: 84

NO DATA ENTERED

Good

Over: CRESCENT CREEK CULVERTS

NO DATA ENTERED, Klamath, OR

Built 1950 Load: 97.2 t ADT: 50

FLOATING POINT RD

Poor

Over: LITTLE DESCHUTES RIVER

1.5 MI N OF OR 58, Klamath, OR

Built 1980 Load: 3.9 t ADT: 73

IVORY PINE ROAD

Poor

Over: MERYL CREEK

056 MI N HWY 140, Klamath, OR

Built 1970 Load: 9.4 t ADT: 434

E LANGELL VLY RD

Poor

Over: LOST RIVER

001 MI W KELLER RD, Klamath, OR

Built 1967 Load: 14.6 t ADT: 398

HWY 429

Poor

Over: CRESCENT CREEK

023 MI S HWY 18 JCT, Klamath, OR

Built 1954 Load: 21.7 t ADT: 147

ODELL LK ACCESS RD

Poor

Over: TRAPPER CREEK

W END ODELL LAKE, Klamath, OR

Built 1982 Load: 24.5 t ADT: 130

ROAD

Poor

Over: SOUTH FORK SPRAGUE RIVER

NO DATA ENTERED, Klamath, OR

Built 1961 Load: 29.1 t ADT: 50

ROAD

Poor

Over: BROWN CREEK

NO DATA ENTERED, Klamath, OR

Built 1967 Load: 34.5 t ADT: 20

ROAD

Poor

Over: JACK CREEK

(ORIG.# 2653 - 9.6), Klamath, OR

Built 1959 Load: 36.3 t ADT: 6

ROAD

Poor

Over: LONG BRANCH CREEK

NO DATA ENTERED, Klamath, OR

Built 1958 Load: 39.0 t ADT: 50

ROAD

Structurally Deficient

Over: WILLIAMSON RIVER

(ORIG.# 9730000 - 0.7), Klamath, OR

Built 1969 Load: 2.7 t ADT: 23

SADDLE MT PIT RD

Structurally Deficient

Over: SPRAGUE RIVER

003 MI W OF SPRAGUE R RD, Klamath, OR

Built 1965 Load: 22.0 t ADT: 45

WU ROAD

Structurally Deficient

Over: DRAIN DITCH

004 MI E OF BLISS ROAD, Klamath, OR

Built 1974 Load: 67.1 t ADT: 68

E LANGELL VLY RD

Structurally Deficient

Over: DRAIN DITCH

008 MI W OF GERBER RD, Klamath, OR

Built 1976 Load: 74.4 t ADT: 446

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