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Every bridge in Modoc County, California

Name: Every bridge in Modoc County, California
Creator: Bridge Report Card
License: https://creativecommons.org/publicdomain/zero/1.0/

87 inventoried bridges, busiest first

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Modoc County, California, has 87 bridges in the 2025 National Bridge Inventory: 43 rated good, 43 fair, and 1 poor (as of August 20, 2026).
This index lists every one of them, busiest first; each links to its own condition record.

Bridge	Built	Vehicles/day	Condition
U.S. Highway 395 over North Fork Pit River	1982	4,000	Fair
U.S. Highway 395 over Parker Creek	1954	4,000	Fair
State Route 299 over Rattlesnake Creek	1980	3,000	Good
State Route 299 over Rock Creek	1937	2,800	Good
U.S. Highway 395 over South Fork Pit River	1971	2,400	Fair
U.S. Highway 395 over South Fork Pit River	1971	2,400	Good
U.S. Highway 395 over UP RR	1971	2,400	Fair
U.S. Highway 395 over UP RR	1971	2,400	Fair
State Route 299 over W Br Cloverswale Creek	1920	2,200	Fair
Lookout-hackmore R over Pit River	1975	2,068	Fair
Irr Lkout-hkmore R over Pit River Overflow	1975	2,055	Good
State Route 139 over UP RR	1954	2,000	Fair
State Route 299 over Cloverswale Creek	1991	2,000	Good
U.S. Highway 395 over North Fork Pit River	1971	2,000	Fair
U.S. Highway 395 over South Fork Pit River	1947	2,000	Fair
State Route 139 over Howards Gulch	1966	1,600	Fair
State Route 299 over Ash Creek	2020	1,600	Good
State Route 299 over Rush Creek	1964	1,500	Good
State Route 299 over Rush Creek	1964	1,500	Good
State Route 299 over Butte Creek	2020	1,400	Good
State Route 299 over Dry Creek	1929	1,400	Fair
State Route 299 over Caldwell Creek	2019	1,350	Good
Centerville Rd over North Fork Pit River	1958	1,300	Fair
State Route 299 over Pit River	1962	1,200	Poor
State Route 299 over Dutch Flat Creek	1936	1,110	Fair
State Route 299 over North Fork Ash Creek	2012	1,110	Good
Centerville Rd over South Fork Pit River	1958	1,000	Good
Co Rd 56 over Alturas Creek	1938	800	Fair
Estes Street over North Fork Pit River	1971	620	Fair
Surprise Valley Rd over Owl Creek	1943	450	Fair
Maine St over Bidwell Creek	1934	400	Fair
County Road 112 over J Canal	1940	380	Fair
Irr Co Rd 87 over Pit River Slough	1955	350	Good
Irr Co Rd 87 over Pit River Slough	1955	350	Fair
CR 64/JESS Valley over South Fork Pit River	1972	315	Fair
Irr Adin-lkt CR87 over Roberts Slough	1955	255	Good
Irr Co Rd 87 over Mamath Slough	1955	255	Good
Irr Co Rd 87 over Pit River Slough	1955	255	Fair
Irr Co Rd 87 over Roberts Slough	1955	255	Good
CR 54/CENTERVILLE over North Branch Pit River	1958	245	Fair
Centerville Rd over Middle Branch Pit River	1958	245	Good
Centerville Rd over South Branch Pit River	1958	245	Good
Centerville Rd over Toms Creek	1958	245	Good
County Road 75 over Pit River	1919	202	Fair
CR 111 over J 14 A Canal	1954	200	Good
CR 111 over J 14 B Canal	1954	200	Good
Centerville Rd over Canyon Creek Overflow	1958	200	Fair
Co Rd 60 over Eastside Canal	2004	200	Fair
Irr Alpine Rd. 58 over Parker Creek	1968	200	Fair
County Road 70 over Pit River	1997	185	Good
County Road 70 over Pit River	1996	185	Good
CR 111 over J Canal	1954	169	Good
Irr CR 111 over No 46 Drain	1954	169	Good
CR 71 over Canyon Creek	1986	150	Fair
County Road 60 over Westside Canal	1985	150	Fair
CR 111 over 45 D Drain	1954	145	Good
CR 54/CENTERVILLE over Canyon Creek	1958	100	Good
CR 85 over Pit River	2006	100	Fair
County Road 86 over Rush Creek	2019	100	Good
Irr Bia Rte 76 over North Fork of Pit River	2003	100	Fair
Co Rd 198 over Rush Creek	1923	75	Fair
Blue Lake Road over South Fork Pit River	1957	60	Fair
38n54 over Juniper Creek	1970	50	Good
39n50 over Ash Creek	1970	50	Good
42n16 over Parker Creek	1969	50	Good
42n31 over South Fork Parker Creek	1969	50	Fair
42n35 over Turner Creek	1969	50	Fair
48n48 over Lost River	1971	50	Good
Forest Road 22 over Ash Creek	1976	50	Good
Jones Ln -co Rd 61 over Middle Canal	2013	50	Fair
Jones Ln -co Rd 61 over Westside Canal	2013	50	Good
No Data Entered over Lassen Creek	1962	50	Fair
Old Blue Lake Road over South Fork Pit River	1952	50	Fair
Road 63 over Stones Canyon	1976	50	Fair
South Warner Road over East Creek	1958	50	Good
County Road 215 over Howards Gulch	1931	32	Fair
County Road 215 over Howards Gulch	1931	32	Good
CR 90 over Halls Creek	1995	25	Good
Irr Co Rd 90 over Pit River Overflow	2001	25	Good
Irr Co Road 90 over Pit River	2001	25	Good
CR 87A over Ash Creek	1950	23	Fair
Co Rd 133C over Willow Creek	1987	20	Fair
County Road 45 over Pine Creek	2016	20	Good
Co Rd 69 over Pit River	2002	19	Good
Irr Bia Rte 76 over Mud Creek	1995	10	Good
Kowolski Road over Clear Lake Dam spillway	1999	1	Good
41n11 over Johnson Creek	1972	–	Fair

Source: FHWA National Bridge Inventory, 2025.

Modoc County bridge conditions · California bridges by county.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.