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Bridge conditions in Harper County, Kansas

373 inventoried bridges · 32 rated poor · 2025 National Bridge Inventory

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

The federal inventory lists 373 bridges in Harper County: 99 rated good, 242 fair, and 32 poor.

32 of the 373 bridges in Harper County, Kansas, are rated in poor condition (8.6%) in the 2025 National Bridge Inventory, as of August 20, 2026.
99 bridges (26.5%) are rated good and 242 (64.9%) fair.
The median Harper County bridge was built in 1965.
The busiest poor-rated bridge is NW 60 Rd over Camp Creek (built 1924), carrying about 1,030 vehicles a day.

Good 26.5% · Fair 64.9% · Poor 8.6% of 373 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
NW 60 Rd over Camp Creek	1924	1,030	Poor
Rs 302 NW 50TH Ave over Stream	1940	80	Poor
NW 60 Rd over Cottonwood Creek	1918	80	Poor
SW 40th RD over Little Sandy Creek	1930	80	Poor
NE 30 Rd over Stream	1930	80	Poor
RS 1485 40 Ave over Trib. to Silver Creek	1925	66	Poor
Rs 1485 SE 40 Ave over Wildcat Creek	1935	55	Poor
Local Rd. L.9-20.0 over Stream	1978	50	Poor
SW 40 Ave over Stream	1930	40	Poor
NE 120 Rd over Stream	1970	30	Poor
NW 170 Ave over Gene Creek	1948	20	Poor
NW 130 Rd over Stream	2001	20	Poor
NE 150 Rd over Spring Creek	1945	20	Poor
Local Cc.0-21.9 over Spring Branch Creek	1979	20	Poor
NW 170 Ave over Spring Creek	1970	10	Poor
NW 30th RD over Stream	1970	10	Poor
NW 110 Rd over Bluff Creek	1966	10	Poor
NW 80 Rd 9.0-g.4 over West Branch Bluff Creek	1968	10	Poor
NW 90 Rd 8.0-i.7 over Middle Branch Bluff Ck.	1967	10	Poor
NW 110 Ave over Stream	1960	10	Poor
SW 70 Rd over Trib. to Sandy Creek	1976	10	Poor
SW 50 Ave over Stream	1952	10	Poor
Local N.2-19 over Beaver Creek	1930	10	Poor
NW 10 Rd over Bluff Creek	1965	10	Poor
SW 20 Ave over Copper Creek	1960	10	Poor
NE 130 Rd @ 15 Ave over Trib. to Sand Creek	1980	10	Poor
NE 140 Rd over Spring Creek	1970	10	Poor
SE 20 Rd over Silver Creek	1930	10	Poor
NE 120 Ave over Stream	1948	10	Poor
SE 50 Rd over Bluff Creek	1970	10	Poor
Local Dd.2-23 over Bluff Creek	1970	10	Poor
SW 60 Ave over Stream	1930	5	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
K2 Hwy over Spring Creek Drainage	1959	3,406	Good
K-2 Hwy over East Sand Creek Drainage	1992	2,657	Good
K2 Hwy over East Sand Creek Drainage	1937	2,616	Good
K2 Hwy over East Spring Creek	1937	2,616	Good
K2 Hwy over Chikaskia River	1990	2,616	Good
K-2 Hwy over BNSF Railroad	1992	2,544	Good
K-2 Hwy over Sand Creek	1992	2,544	Good
US160 Hwy over East Sand Creek Drainage	1956	2,483	Good
US160 Hwy over East Sand Creek Drainage	1956	1,888	Good
US160 Hwy over BNSF Railway	1962	1,508	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 Harper County → - all 373, busiest first, each with its own condition record.

All of Kansas: Kansas 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.