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Bridge conditions in Linn County, Missouri

313 inventoried bridges · 56 rated poor · 2025 National Bridge Inventory

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

Linn County has 56 bridges rated poor out of 313 inventoried, a 17.9% share that puts it well above the national rate of about 7%.

56 of the 313 bridges in Linn County, Missouri, are rated in poor condition (17.9%) in the 2025 National Bridge Inventory, as of August 20, 2026.
119 bridges (38.0%) are rated good and 138 (44.1%) fair.
The median Linn County bridge was built in 1990.
The busiest poor-rated bridge is US 36 E over Sights Br (built 1924), carrying about 8,773 vehicles a day.

Good 38.0% · Fair 44.1% · Poor 17.9% of 313 bridges

Bridges rated poor

Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.

Bridge	Built	Vehicles/day	Condition
US 36 E over Sights Br	1924	8,773	Poor
US 36 W over Muddy CR	1964	6,227	Poor
US 36 W over Big Turkey CR	1961	5,215	Poor
US 36 W over Big Turkey CR Ovrf	1961	5,215	Poor
Rt U S over Long Br	1955	298	Poor
Rt C E over Long Br	1930	289	Poor
Mo 11 S over Badger CR	1934	258	Poor
Mo 139 S over Parson CR	1933	203	Poor
Laclede Ave over Elk CR	1996	200	Poor
Pratt St over Pratt CR	1960	100	Poor
Rt B E over Parsons CR	1966	97	Poor
Rt O E over Yellow CR	1961	68	Poor
Morton Rd over Br E of Yellow CR	1992	50	Poor
Aloe Rd over Parson CR	1996	50	Poor
Grover Rd over Turkey CR	1950	40	Poor
Jasmine Rd over Br of E Yellow CR	1945	35	Poor
Kayak Rd over Br of Yellow CR	1999	35	Poor
Morton Rd over Van Dorsen CR	1930	35	Poor
Kite Rd over E Yellow CR	1997	30	Poor
Kite Rd over Winnegan CR	1930	30	Poor
Grant Rd over Lit Turkey CR	1990	30	Poor
Idaho Rd over Wyellow CR	1910	30	Poor
Daisy Rd over Creek	1994	25	Poor
Field Dr over Unnamed Str	1991	25	Poor
Fair Dr over Lowes Br	1994	25	Poor
June Dr over Branch of Yellow C	1988	25	Poor
Jodine Rd over W Yellow CR	1930	25	Poor
Ginger Rd over Turkey CR	1995	25	Poor
Lotus Rd over Br of Sights Br	1985	25	Poor
Mesa Rd over Sights Br	1940	25	Poor
Doe Rd over Linn Br	1940	20	Poor
Argo Rd over Branch	1950	20	Poor
Ivan Rd over Bear CR	1988	20	Poor
Marsh Dr over Br of Yellow CR	1992	20	Poor
Hacker Rd over Long Br	1990	20	Poor
Ithaca Rd over Unnamed Str	1930	20	Poor
Jaffa Rd over Bear CR	1994	20	Poor
Jaffa Rd over Bear CR	1994	20	Poor
London Rd over Yellow CR	1904	20	Poor
Brook Rd over Br of Parsons CR	1955	15	Poor
Ladue Rd over E Yellow CR	1993	15	Poor
Aloe Rd over Br of Coon CR	1989	15	Poor
Kemper Dr over Br of E Yellow CR	1940	15	Poor
Mill Dr over Sights Br	1935	15	Poor
Hyde Rd over Long Br	1996	15	Poor
Gage Rd over Long Br	1940	10	Poor
Jewel Dr over Unnamed Br	1930	10	Poor
Malta Dr over Long Br	1981	10	Poor
Indy Rd over Br of Yellow CR	1994	10	Poor
Fern Dr over Lowes Br	1950	5	Poor
Gem Rd over Lowes Br	1950	5	Poor
Haven Rd over Long Br	1998	5	Poor
Folk Rd over Muddy CR	1930	5	Poor
Bartok Rd over Lewis CR	1940	5	Poor
Java Rd over Bear CR	1940	5	Poor
County Rd 536 over Elk CR	1920	5	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
US 36 E over S Br of Muddy CR	1961	13,161	Fair
US 36 E over Lit Turkey CR	1961	12,912	Fair
US 36 E over Elk CR	1955	11,581	Fair
US 36 E over Van Dorsen CR	1924	9,524	Fair
US 36 E over Mussel Fk	1951	9,524	Fair
US 36 E over E Yellow CR	1955	9,427	Fair
US 36 E over Sights Br	1924	8,773	Poor
US 36 W over Lit Parsons CR	1967	6,529	Fair
US 36 W over Big Parsons CR	1967	6,409	Fair
US 36 E over Big Parsons CR	1974	6,389	Fair

Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.

Every bridge in Linn County → - all 313, busiest first, each with its own condition record.

All of Missouri: Missouri bridge conditions by county · every download on the data page.

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