Bridge conditions in Marion County, Indiana 969 inventoried bridges · 46 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions 2025 National Bridge Inventory, FHWA Compiled 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.
Every bridge in Marion County →
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 .