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Bridge conditions in Marion County, Indiana

969 inventoried bridges · 46 rated poor · 2025 National Bridge Inventory

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

The federal inventory lists 969 bridges in Marion County: 448 rated good, 475 fair, and 46 poor.

46 of the 969 bridges in Marion County, Indiana, are rated in poor condition (4.7%) in the 2025 National Bridge Inventory, as of August 20, 2026.
448 bridges (46.2%) are rated good and 475 (49.0%) fair.
The median Marion County bridge was built in 1972.
The busiest poor-rated bridge is I-465 over Delaware Creek (built 1966), carrying about 129,314 vehicles a day.

Good 46.2% · Fair 49.0% · Poor 4.7% of 969 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
I-465 over Delaware Creek	1966	129,314	Poor
I-465 over Crooked Creek	1966	129,314	Poor
10TH Street over Big Eagle Creek	1970	38,589	Poor
30TH Street over White River	1907	35,555	Poor
10TH Street over Little Eagle Creek	1988	28,240	Poor
16TH Strmlk Jr over Indpls Water Co Canal	1935	25,206	Poor
42ND Street over Mitthoefer Ditch	1965	25,044	Poor
82ND Street EB over White River	1941	22,060	Poor
Raymond Street over Bean Creek Conrail RR	1973	19,770	Poor
Township Line Road over I-465	1966	17,386	Poor
Emerson Avenue SB over Pogues Run	1965	16,590	Poor
Emerson Avenue NB over Pogues Run	1965	15,921	Poor
High School Rd over Falcon Creek	1972	15,715	Poor
Lynhurst Dr over Seerley Creek	1910	15,130	Poor
Morris St over White Lick Creek	1959	13,310	Poor
Arlington Ave over Little Buck Creek	1961	13,226	Poor
Brookville Road over Shadeland Avenue Nb/sb	1961	13,021	Poor
Shelby St over Little Buck Creek	1964	12,305	Poor
Churchman Ave over Pleasant Run	1923	11,306	Poor
Southport Rd over White River	1950	11,120	Poor
Morris St over Salem Creek	1959	9,267	Poor
Edgewood Ave over Little Buck Creek	1960	5,820	Poor
Moore Rd over Sheets Creek	1935	4,697	Poor
Colorado Ave over Pleasant Run	1958	4,122	Poor
Thompson Road over Dollar Hide Creek	1967	3,998	Poor
Acton Road over Maze Creek	1970	3,688	Poor
Churchman Ave over Bean Creek	1916	3,550	Poor
New Augusta Rd over Little Eagle Creek	1972	2,976	Poor
Delbrook Drive over Unt Howard Johnson Ditch	1968	2,143	Poor
Derbyshire Road over Derbyshire Creek	1935	1,716	Poor
Senour Rd over Big Run	1972	1,557	Poor
Hunter Road over US 421X Nb/sb	1959	1,434	Poor
Falcon Drive over Falcon Creek	1955	1,072	Poor
Roache Ave over Indpls Water Co Canal	1911	1,052	Poor
Lesley Ave over Devon Creek	1963	897	Poor
Audubon Rd over Devon Creek	1962	897	Poor
Pennsylvania St over Williams Creek	1927	884	Poor
Thrush Dr over Falcon Creek	1954	618	Poor
Linden St over Pleasant Run	1922	603	Poor
Georgetown Rd over Dry Run	1970	500	Poor
E Fall Ck Pkwy N D over Blue Creek	1966	469	Poor
Vandergriff Rd over Buck Creek	1958	237	Poor
Indian Creek Rd over Wildcat Brook	1979	233	Poor
Knapp Rd over Flat Branch	1929	233	Poor
76TH St over Crooked Creek	1930	215	Poor
Bluff Road over Pleasant Run Creek	1954	91	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
I-65 over 26TH Street	1968	167,273	Good
I-65 over 29TH Street	1968	167,273	Good
I-65 over West 30TH Street	1968	167,273	Fair
I-65 over Dr Ml King Drive	1968	164,000	Good
I-70 over Belmont Avenue	1967	163,150	Fair
I-70 over Sherman Drive CSX RR	2007	157,928	Good
I-465 over Pedestrian Tunnel	2009	150,350	Good
I-70 over Division Street	1973	143,345	Fair
I-465 NB over US 36 SR 67	1965	141,546	Good
I-465 SB over US 36 SR 67	1965	141,546	Good

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

All of Indiana: Indiana 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.