Bridge conditions in Allen County, Ohio
364 inventoried bridges · 33 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Allen County tracks close to typical: 33 of its 364 inventoried bridges (9.1%) are rated poor, against a national rate of about 7%.
- 33 of the 364 bridges in Allen County, Ohio, are rated in poor condition (9.1%) in the 2025 National Bridge Inventory, as of .
- 252 bridges (69.2%) are rated good and 79 (21.7%) fair.
- The median Allen County bridge was built in 1980.
- The busiest poor-rated bridge is Ft. Amanda Rd. over Little Ottawa Ft Amanda (built 1958), carrying about 6,549 vehicles a day.
Good 69.2% · Fair 21.7% · Poor 9.1% of 364 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 |
|---|---|---|---|
| Ft. Amanda Rd. over Little Ottawa Ft Amanda | 1958 | 6,549 | Poor |
| Bluf - Main St over Marsh Run - Dixie Hwy | 1927 | 3,640 | Poor |
| Bluf - Main St over Riley Creek - Dixie Hwy | 1925 | 3,481 | Poor |
| Adgate Rd. over Ottawa River Adgate Rd | 1972 | 3,457 | Poor |
| Breese Rd. over Freund Creek - Breese Rd | 1958 | 2,133 | Poor |
| Slabtown Rd. over Stream Slabtown Rd | 1975 | 1,848 | Poor |
| Copus Rd. over Ottawa River - Copus Rd | 1986 | 1,604 | Poor |
| Bluf - Grove Rd over Little Riley - Bluf Grov | 1957 | 1,547 | Poor |
| Bluf - Bentley over Little Riley - Bentley R | 1960 | 1,404 | Poor |
| Cleveland Street over Flat Fork Creek | 1959 | 1,000 | Poor |
| West Street over Ottawa River | 1973 | 965 | Poor |
| Lincoln Hwy. over Leatherwood Str Lincoln | 1950 | 945 | Poor |
| Phillips Rd. over Ottawa River Phillips Rd | 1989 | 716 | Poor |
| Lincoln Hwy. over Pike Run Lincoln Hwy | 1955 | 671 | Poor |
| Schooler Rd. over Auglaize River Schooler | 1985 | 600 | Poor |
| Lincoln Hwy. over Sugar Creek Lincoln Hwy | 1960 | 537 | Poor |
| Putnam Co. Line over Stream Put Co Ln | 1975 | 509 | Poor |
| Gomer Rd over Pike Run - Gomer Rd | 1951 | 508 | Poor |
| Acadia Rd. over Jennings Ck Acadia Rd 25 | 1954 | 426 | Poor |
| Sunderland Rd. over Stream Sunderland Rd | 1977 | 343 | Poor |
| Wapak Rd. over Honey Run Wapak Rd | 1977 | 337 | Poor |
| Sandy Point Rd. over Beaver Run Sandy Point | 1975 | 327 | Poor |
| Ream Rd. over Auglaize River Ream Rd | 1974 | 323 | Poor |
| Lafayette Rd. over Ltl Hog CR Lafayette Rd | 1978 | 291 | Poor |
| Beery Rd. over Pike Run Beery Rd | 1968 | 268 | Poor |
| Kemp Rd. over Honey Run Kemp Rd | 1995 | 254 | Poor |
| Bloomlock Rd. over Jenning Creek Bloomlock | 1958 | 247 | Poor |
| Cool Rd. over Ottawa River Cool Road | 1995 | 241 | Poor |
| Thayer Rd. over Cranberry Creek Thayer | 1963 | 212 | Poor |
| Begg Rd. over Cranberry Begg Rd | 1963 | 184 | Poor |
| Wonnell Rd. over Auglaize River Wonnell | 1985 | 109 | Poor |
| Elm Street over Rider Ditch | 1940 | 100 | Poor |
| Franklin Street over Flat Fork Creek | 1914 | 50 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ir 75 over Lost Creek | 2014 | 39,060 | Good |
| Ir 75 SB over SR 65 | 2015 | 22,650 | Good |
| Ir 75 NB over SR 65 | 2016 | 22,650 | Good |
| Ir 75 SB over I & O RR | 2015 | 22,650 | Good |
| Ir 75 NB over I & O RR | 2016 | 22,650 | Good |
| SR 117 over Branch of Lost Creek | 2013 | 21,540 | Good |
| Ir 75 SB over Little Ottawa River | 2014 | 20,855 | Good |
| Ir 75 NB over Little Ottawa River | 2015 | 20,855 | Good |
| Ir 75 SB over Cf&e RR & Bike Path | 2014 | 20,148 | Good |
| Ir 75 NB over Cf&e RR & Bike Path | 2014 | 20,148 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Ohio: Ohio 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.