Home › Ohio › Allen County

Bridge conditions in Allen County, Ohio

364 inventoried bridges · 33 rated poor · 2025 National Bridge Inventory

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

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 August 20, 2026.
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.

Every bridge in Allen County → - all 364, busiest first, each with its own condition record.

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.