Bridge conditions in Johnson County, Missouri
475 inventoried bridges · 33 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Johnson County tracks close to typical: 33 of its 475 inventoried bridges (6.9%) are rated poor, against a national rate of about 7%.
- 33 of the 475 bridges in Johnson County, Missouri, are rated in poor condition (6.9%) in the 2025 National Bridge Inventory, as of .
- 166 bridges (34.9%) are rated good and 276 (58.1%) fair.
- The median Johnson County bridge was built in 1992.
- The busiest poor-rated bridge is US 50 E over UP RR (built 1968), carrying about 8,279 vehicles a day.
Good 34.9% · Fair 58.1% · Poor 6.9% of 475 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 50 E over UP RR | 1968 | 8,279 | Poor |
| US 50 W over UP RR | 1956 | 6,420 | Poor |
| Washington Ave over Br of Long Br CR | 1998 | 1,000 | Poor |
| Rt M S over Snail CR | 1947 | 552 | Poor |
| Rt V E over Colburn CR | 1951 | 551 | Poor |
| Rt Tt E over Hornsby Br | 1955 | 345 | Poor |
| Co Rd SW 850 over Hogan Fk | 1912 | 167 | Poor |
| Co Rd NW 1771 over Br S Fk Blackwater | 1989 | 110 | Poor |
| Co Rd SW 801 over Trib of Big CR | 1989 | 110 | Poor |
| Co Rd NW 1051 over Lit Blackwater CR | 2005 | 110 | Poor |
| Co Rd NE 421 over Cottonwood Br | 1989 | 91 | Poor |
| Co Rd SE 650 over Clear Fk | 1900 | 84 | Poor |
| Co Rd NE 1150 over Flagstaff CR | 1900 | 65 | Poor |
| Co Rd NE 521 over Mulkey CR | 1988 | 60 | Poor |
| Co Rd SW 401 over Hogan Fk | 1990 | 60 | Poor |
| Co Rd NW 701 over Br of Honey CR | 1900 | 45 | Poor |
| Co Rd NW 575 over Walnut CR | 1900 | 45 | Poor |
| Co Rd NE 151 over Colburn Br | 1900 | 45 | Poor |
| Co Rd NW 1251 over Little CR | 1997 | 45 | Poor |
| Co Rd NW 1621 over Br S Fk Blackwater | 1930 | 45 | Poor |
| Co Rd SW 800 over Hogan Fk | 1900 | 45 | Poor |
| Co Rd SW 800 over E Fk Post Oak CR | 1900 | 45 | Poor |
| Co Rd SW 600 over Brawley CR | 1980 | 45 | Poor |
| Co Rd SE 601 over Fk Blackwater Rvr | 1992 | 45 | Poor |
| Co Rd SE 651 over Copperas CR | 1900 | 45 | Poor |
| Co Rd SE 1300 over Br E Fork Tebo CR | 1900 | 45 | Poor |
| Co Rd SW 1200 over Norris CR | 1989 | 45 | Poor |
| Co Rd SW 1621 over Scaly Bark CR | 1990 | 45 | Poor |
| Co Rd NE 671 over Mulkey CR | 1900 | 40 | Poor |
| Co Rd SE 1250 over Br Mid Fk Tebo CR | 1989 | 40 | Poor |
| Co Rd SW 301 over E Fk Post Oak CR | 1900 | 40 | Poor |
| Co Rd NW 701 over Honey CR | 1999 | 35 | Poor |
| Co Rd SW 700 over Br E Fk Post Oak C | 1900 | 30 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 50 E over Mayes Br | 1968 | 18,503 | Fair |
| US 50 E over Trib Blackwater Rv | 1924 | 17,553 | Fair |
| Bu 13 S over US 50 | 1959 | 17,494 | Fair |
| US 50 W over Post Oak CR | 1967 | 14,542 | Fair |
| Bu 13 S over UP RR | 1963 | 14,241 | Fair |
| US 50 W over Devils Br | 1967 | 10,624 | Fair |
| US 50 E over Robinson CR | 1965 | 10,534 | Fair |
| US 50 E over Post Oak CR | 1924 | 10,042 | Fair |
| US 50 E over Blackwater Rvr | 1965 | 9,903 | Fair |
| US 50 E over Clear Fk CR | 1983 | 9,829 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
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.