Modoc County, CA
87 public highway bridges
Modoc County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Modoc County, California contains 87 public highway bridges. Roughly 49.4% are rated “Good,” 49.4% “Fair,” and 1.1% “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.
Condition Distribution
All Bridges (87)
CR 111
GoodOver: J 14 B CANAL
1.1 MI N SH 139, Modoc, CA
CR 111
GoodOver: J 14 A CANAL
2.6 MI N OF SH 139, Modoc, CA
STATE ROUTE 299
GoodOver: ROCK CREEK
02-MOD-299-37.16, Modoc, CA
CR 54/CENTERVILLE
GoodOver: CANYON CREEK
9.1 MI S/E OF SH 299, Modoc, CA
CENTERVILLE RD
GoodOver: TOMS CREEK
3.2 MI S/E OF SH 299, Modoc, CA
COUNTY ROAD 70
GoodOver: PIT RIVER
.8 MI N OF CENTERVILLE RD, Modoc, CA
IRR CR 111
GoodOver: NO 46 DRAIN
0.6 MI S OF SH 139, Modoc, CA
CENTERVILLE RD
GoodOver: SOUTH BRANCH PIT RIVER
0.6 MI S OF SH 299, Modoc, CA
CENTERVILLE RD
GoodOver: MIDDLE BRANCH PIT RIVER
0.4 MI SOUTH OF SH 299, Modoc, CA
CENTERVILLE RD
GoodOver: SOUTH FORK PIT RIVER
0.6MI S OF CARLOS ST, Modoc, CA
STATE ROUTE 299
GoodOver: RUSH CREEK
02-MOD-299-8.07, Modoc, CA
39N50
GoodOver: ASH CREEK
3 MI PAST DAN RYAN PLACE, Modoc, CA
STATE ROUTE 299
GoodOver: RUSH CREEK
02-MOD-299-6.32, Modoc, CA
CR 111
GoodOver: 45 D DRAIN
1.15 MI N OF SH 139, Modoc, CA
IRR CO RD 87
GoodOver: PIT RIVER SLOUGH
0.1 MI N LKOUT HAKMORE RD, Modoc, CA
STATE ROUTE 299
GoodOver: CLOVERSWALE CREEK
02-MOD-299-27.43, Modoc, CA
STATE ROUTE 299
GoodOver: NORTH FORK ASH CREEK
02-MOD-299-3.38, Modoc, CA
STATE ROUTE 299
GoodOver: CALDWELL CREEK
02-MOD-299-23.34, Modoc, CA
STATE ROUTE 299
GoodOver: BUTTE CREEK
02-MOD-299-0.51, Modoc, CA
STATE ROUTE 299
GoodOver: ASH CREEK
02-MOD-299-1.02, Modoc, CA
CR 90
GoodOver: HALLS CREEK
1.0 MI E C.R. 91, Modoc, CA
CO RD 69
GoodOver: PIT RIVER
2.7 MI S HWY 299, Modoc, CA
IRR CO ROAD 90
GoodOver: PIT RIVER
MOD CTY, Modoc, CA
IRR CO RD 90
GoodOver: PIT RIVER OVERFLOW
0.3 MI EAST OF LOOKOUT RD, Modoc, CA
JONES LN -CO RD 61
GoodOver: WESTSIDE CANAL
0.7 MI W OF SH 395, Modoc, CA
COUNTY ROAD 45
GoodOver: PINE CREEK
0.2 MI S OF STATELINE RD, Modoc, CA
COUNTY ROAD 86
GoodOver: RUSH CREEK
EAST OF STATE ROUTE 299, Modoc, CA
IRR BIA RTE 76
GoodOver: MUD CREEK
7 KM NE OF ALTURAS, Modoc, CA
CR 111
GoodOver: J CANAL
2.6 MI S OF SH 139, Modoc, CA
IRR CO RD 87
GoodOver: MAMATH SLOUGH
0.5 MI NE CR 91, Modoc, CA
IRR CO RD 87
GoodOver: ROBERTS SLOUGH
0.9 MI NE LKOT HKAMORE RD, Modoc, CA
IRR ADIN-LKT CR87
GoodOver: ROBERTS SLOUGH
1.0 MI NE LKOT-HCKMORE RD, Modoc, CA
Kowolski Road
GoodOver: Clear Lake Dam spillway
40 mi SE of Klamath Falls, Modoc, CA
U.S. HIGHWAY 395
GoodOver: SOUTH FORK PIT RIVER
02-MOD-395-R19.64, Modoc, CA
STATE ROUTE 299
GoodOver: RATTLESNAKE CREEK
02-MOD-299-37.80, Modoc, CA
IRR LKOUT-HKMORE R
GoodOver: PIT RIVER OVERFLOW
1.2 MI S C.R. 87, Modoc, CA
STATE ROUTE 299
PoorOver: PIT RIVER
02-MOD-299-17.95, Modoc, CA
Read our methodology - how this data is sourced, computed, and verified.
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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.