Klamath County, OR

248 public highway bridges

Klamath County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Klamath County, Oregon contains 248 public highway bridges. Roughly 45.2% are rated “Good,” 44.4% “Fair,” and 5.2% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

248
Total Bridges
45.2%
Good
44.4%
Fair
5.2%
Poor Condition

Condition Distribution

Good
45.2% (112)
Fair
44.4% (110)
Poor
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

ROAD

Poor

Over: WILLIAMSON RIVER

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

Built 1969 Load: 2.7 t ADT: 23

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

SADDLE MT PIT RD

Poor

Over: SPRAGUE RIVER

003 MI W OF SPRAGUE R RD, Klamath, OR

Built 1965 Load: 22.0 t ADT: 45

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

WU ROAD

Poor

Over: DRAIN DITCH

004 MI E OF BLISS ROAD, Klamath, OR

Built 1974 Load: 67.1 t ADT: 68

E LANGELL VLY RD

Poor

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.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.