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Indiana Bridge Conditions

Highway bridges longer than 20 feet in the 2025 National Bridge Inventory

Yearly inspection ratings. A poor rating does not mean a bridge is unsafe to use.

Highway bridges
19,542
Good condition
42%
8,213
Poor condition
5.3%
1,043
Weight-limited or closed
1,893

Bridges by county

CountyBridgesGoodPoorWeight-limitedAvg. year built
Adams County19546.2%1% (2)11984
Allen County61541.8%7.3% (45)671979
Bartholomew County26951.7%3.7% (10)191982
Benton County15245.4%2% (3)111986
Blackford County7331.5%4.1% (3)01984
Boone County29240.4%4.1% (12)211975
Brown County11422.8%14.9% (17)521964
Carroll County16038.1%1.3% (2)81974
Cass County18748.7%1.6% (3)21988
Clark County25950.6%1.5% (4)71987
Clay County18534.6%10.3% (19)561976
Clinton County21032.4%5.2% (11)271972
Crawford County12334.1%17.1% (21)411965
Daviess County22159.3%0% (0)341993
Dearborn County14535.2%12.4% (18)271974
Decatur County22033.2%5.9% (13)91972
DeKalb County14938.9%1.3% (2)21981
Delaware County27630.8%8.3% (23)171976
Dubois County22047.3%2.3% (5)111982
Elkhart County27833.5%9.4% (26)251975
Fayette County10029%11% (11)191981
Floyd County14935.6%5.4% (8)11975
Fountain County19624.5%9.2% (18)351964
Franklin County16134.8%9.9% (16)351973
Fulton County8535.3%4.7% (4)61977
Gibson County36641.8%6% (22)591978
Grant County28038.9%1.4% (4)101975
Greene County23944.4%8.8% (21)351982
Hamilton County46068.5%2.4% (11)21996
Hancock County20157.7%2.5% (5)51985
Harrison County12839.1%3.1% (4)41983
Hendricks County35840.8%2.5% (9)121982
Henry County20632%2.9% (6)421979
Howard County19439.2%5.7% (11)141976
Huntington County18738%5.3% (10)111978
Jackson County32147.4%1.6% (5)121982
Jasper County18934.4%0.5% (1)11982
Jay County19144%6.3% (12)131982
Jefferson County15442.2%2.6% (4)91977
Jennings County16242%8.6% (14)241975
Johnson County23040%10% (23)231983
Knox County29040.3%4.5% (13)351976
Kosciusko County15335.3%6.5% (10)161975
LaGrange County10045%0% (0)261974
Lake County50149.7%7.2% (36)481984
LaPorte County22734.4%6.6% (15)61973
Lawrence County16532.1%9.7% (16)191982
Madison County30138.9%3.3% (10)171978
Marion County96946.2%4.7% (46)261978
Marshall County18355.7%3.3% (6)41985
Martin County10439.4%7.7% (8)121977
Miami County17136.3%7% (12)181967
Monroe County23460.7%3.8% (9)81988
Montgomery County25248%3.2% (8)61983
Morgan County25349.8%3.6% (9)141986
Newton County17243%2.9% (5)91983
Noble County8838.6%6.8% (6)11976
Ohio County4146.3%2.4% (1)11987
Orange County13636%10.3% (14)351971
Owen County15040.7%8.7% (13)161979
Parke County20024.5%17.5% (35)811953
Perry County14941.6%2% (3)501978
Pike County17350.9%9.8% (17)241979
Porter County27941.2%4.7% (13)101972
Posey County20745.9%5.8% (12)151982
Pulaski County10230.4%2% (2)71977
Putnam County29330.7%17.4% (51)791964
Randolph County25639.8%7.8% (20)211978
Ripley County19134%4.7% (9)181974
Rush County22726.9%3.5% (8)201971
Scott County11850%5.1% (6)71983
Shelby County24732%7.3% (18)181974
Spencer County24746.2%2.4% (6)281982
St. Joseph County22748%4.8% (11)41980
Starke County8754%5.7% (5)31987
Steuben County13548.9%1.5% (2)41970
Sullivan County21730%5.1% (11)671966
Switzerland County6245.2%1.6% (1)151982
Tippecanoe County33060.3%4.5% (15)101982
Tipton County11744.4%0.9% (1)81984
Union County5827.6%5.2% (3)41973
Vanderburgh County27949.1%3.9% (11)51981
Vermillion County12726.8%5.5% (7)51974
Vigo County29645.3%4.7% (14)401977
Wabash County19228.6%6.8% (13)171976
Warren County13529.6%7.4% (10)131970
Warrick County19748.7%3.6% (7)111981
Washington County17444.3%1.7% (3)241977
Wayne County34340.2%5.5% (19)91975
Wells County15843.7%3.8% (6)221981
White County21436.4%4.2% (9)101979
Whitley County11540.9%0% (0)11984

Frequently asked questions

How many bridges in Indiana are in poor condition?
In the 2025 National Bridge Inventory, 1,043 of 19,542 highway bridges in Indiana were rated poor (5.3% of rated bridges).
Which Indiana counties have the most bridges in poor condition?
Among counties with at least 30 bridges, the highest shares rated poor are Parke County (17.5%), Putnam County (17.4%), Crawford County (17.1%), Brown County (14.9%), Dearborn County (12.4%).

Source: Federal Highway Administration, National Bridge Inventory ยท 2025 data