Scour-Critical Bridges in Indiana

Indiana has 765 bridges rated scour-critical by the Federal Highway Administration. These bridges have foundations that are unstable or at risk of undermining during flood events. Scour-critical doesn't mean a bridge is about to collapse — it means extra monitoring and countermeasures are in place — but these structures are priorities for repair or replacement.

How this ranking works

This state list filters to NBI scour ratings 0 through 3, then sorts by average daily traffic. It is intended to show flood-vulnerability exposure, not to label any bridge as currently unsafe.

Bridge	County	Scour Rating	Daily Traffic	Condition
I-70 over Big Eagle Creek	Marion	3 — Serious	109,416	Good
I-465 NB over Fall Creek & Trail	Marion	3 — Serious	101,476	Fair
I-465 SB over Fall Creek & Trail	Marion	3 — Serious	97,835	Fair
I-465 EB over Carmel Creek	Marion	3 — Serious	92,625	Fair
I-465 WB over Carmel Creek	Marion	3 — Serious	92,625	Fair
I-70 EB over West Fk White Lick Creek	Hendricks	3 — Serious	65,674	Fair
I-70 WB over West Fk White Lick Creek	Hendricks	3 — Serious	65,674	Good
I-70 WB over Clarks Creek	Hendricks	3 — Serious	65,674	Fair
I-70 EB over Branch Mccracken Creek	Hendricks	3 — Serious	51,175	Fair
I-70 WB over Branch Mccracken Creek	Hendricks	3 — Serious	51,175	Fair
I-70 EB over N Branch Mccracken Creek	Hendricks	3 — Serious	51,175	Good
I-70 EB over Clarks Creek	Hendricks	3 — Serious	51,175	Good
I-465 EB over Lick Creek	Marion	3 — Serious	46,611	Good
I-465 WB over Lick Creek	Marion	3 — Serious	44,678	Good
I-70 EB over Bayliss State Ditch	Morgan	3 — Serious	40,874	Fair
I-70 WB over Bayliss State Ditch	Morgan	3 — Serious	40,874	Fair
SR 3238 over White River & Walkway	Hamilton	3 — Serious	40,154	Good
10th Street over Big Eagle Creek	Marion	2 — Critical	38,589	Poor
SR 265 WB over Lick Run	Clark	3 — Serious	34,755	Fair
I-70 EB over Big Walnut Creek	Putnam	3 — Serious	34,117	Fair
I-70 WB over Big Walnut Creek	Putnam	3 — Serious	34,117	Fair
I-265 EB over Jacobs Creek	Floyd	3 — Serious	34,076	Fair
I-265 EB over Access Road Silver Cr.	Floyd	3 — Serious	34,076	Fair
SR 265 EB over Lick Run	Clark	3 — Serious	33,248	Good
US 31 over Pleasant Run Creek	Johnson	3 — Serious	33,232	Fair
US 31 over I-465 Eb/wb Lick CR	Marion	3 — Serious	32,999	Fair
16th Street over White River	Marion	3 — Serious	32,885	Fair
I-265 WB over Jacobs Creek	Floyd	3 — Serious	31,972	Fair
I-265 WB over Access Road Silver Cr.	Floyd	3 — Serious	31,972	Fair
SR 135 over Buffalo Creek	Marion	3 — Serious	31,576	Fair
US 41 NB over Honey Creek	Vigo	3 — Serious	28,504	Good
US 41 Sbl over Honey Creek	Vigo	3 — Serious	28,504	Good
I-65 Nbl over Wildcat Creek	Tippecanoe	3 — Serious	28,376	Good
I-65 Sbl over Wildcat Creek	Tippecanoe	3 — Serious	28,376	Good
I-65 NB over Amity Ditch	Johnson	3 — Serious	28,018	Fair
I-65 SB over Amity Ditch	Johnson	3 — Serious	27,789	Good
US 31 over Pleasant Run Creek	Johnson	3 — Serious	27,568	Fair
I-94 WB over Norris Ditch No 2	LaPorte	3 — Serious	27,527	Fair
I-65 NB over Big Eagle Creek	Marion	3 — Serious	27,250	Good
I-65 SB over Big Eagle Creek	Marion	3 — Serious	27,250	Good
I-74 WB over Big White Lick Creek	Hendricks	3 — Serious	25,764	Good
I-70 EB over Clear Creek	Vigo	3 — Serious	25,145	Good
I-70 WB over Clear Creek	Vigo	3 — Serious	25,145	Good
I-70 EB over Sugar Creek	Vigo	3 — Serious	25,145	Fair
US 36 EB over Little White Lick Creek	Marion	3 — Serious	24,998	Fair
US 36 WB over Little White Lick Creek	Marion	3 — Serious	24,998	Fair
I-70 WB over E Fk/e Fk Whitewater Riv	Wayne	3 — Serious	23,650	Fair
US 40 over Thompson Ditch	Vigo	3 — Serious	23,522	Good
US 30 over Salt Creek	Porter	3 — Serious	23,497	Fair
Airport Expy over ST Marys River & Park Tr	Allen	3 — Serious	23,000	Fair
I-70 WB over Sugar Creek	Vigo	3 — Serious	22,769	Good
I-65 SB over Brown Ditch	Lake	3 — Serious	22,124	Poor
I-65 SB over Jesse Little Ditch	Lake	3 — Serious	22,124	Fair
I-65 NB over Brown Ditch	Lake	3 — Serious	21,697	Fair
I-65 NB over Jesse Little Ditch	Lake	3 — Serious	21,697	Fair
I-74 EB over North Fork Spring Creek	Vermillion	3 — Serious	21,224	Fair
I-74 WB over North Fork Spring Creek	Vermillion	3 — Serious	21,224	Fair
I-65 NB over Blue Lick Creek	Clark	3 — Serious	20,765	Fair
I-65 SB over Blue Lick Creek	Clark	3 — Serious	20,765	Fair
I-70 EB over Greens Fork	Wayne	3 — Serious	20,025	Fair
I-70 WB over Greens Fork	Wayne	3 — Serious	20,025	Fair
I-70 EB over Nolands Fork	Wayne	3 — Serious	20,025	Good
I-70 EB over Whitewater River Ovfl	Wayne	3 — Serious	19,818	Fair
I-70 WB over Whitewater River Ovfl	Wayne	3 — Serious	19,818	Fair
SR 1sr 44 over Whitewater River	Fayette	3 — Serious	19,677	Good
I-70 EB over Anthony Creek	Hancock	3 — Serious	19,477	Fair
I-70 WB over Anthony Creek	Hancock	3 — Serious	19,477	Fair
SR 2 over Geyer Ditch	St. Joseph	3 — Serious	19,425	Fair
I-70 EB over Montgomery Creek	Henry	3 — Serious	19,260	Fair
I-69 NB over Ns Rr Mcculloch Ditch	Allen	3 — Serious	19,158	Fair
I-74 EB over Johnson Fk/johnson Fk RD	Dearborn	3 — Serious	19,024	Good
I-74 WB over Johnson Fk/johnson Fk RD	Dearborn	3 — Serious	18,929	Fair
I-70 WB over Nolands Fork	Wayne	3 — Serious	18,841	Good
I-69 SB over Ns Rr Mcculloch Ditch	Allen	3 — Serious	18,794	Fair
I-70 EB over Symons Creek	Henry	3 — Serious	18,703	Fair
I-70 WB over Symons Creek	Henry	3 — Serious	18,703	Fair
I-70 EB over E Fk/e Fk Whitewater Riv	Wayne	3 — Serious	18,702	Poor
I-70 EB over Plum Creek	Wayne	3 — Serious	18,535	Poor
I-70 WB over Plum Creek	Wayne	3 — Serious	18,431	Poor
I-70 WB over Montgomery Creek	Henry	3 — Serious	18,260	Fair
SR 56 over Honey Run	Scott	3 — Serious	17,764	Good
I-74 EB over Little Sugar Creek	Montgomery	3 — Serious	17,400	Good
I-70 EB over Croys Creek	Putnam	3 — Serious	17,165	Fair
SR 14 over Seegar Ditch	Allen	3 — Serious	16,871	Good
SR 45 over Br Indian Creek	Monroe	3 — Serious	16,548	Fair
I-64 EB over Blue River Blue Road	Harrison	3 — Serious	16,250	Fair
I-64 WB over Blue River Blue Road	Harrison	3 — Serious	16,250	Fair
SR 14 over Beal-taylor Ditch	Allen	3 — Serious	16,231	Good
Springmill RD over Williams Creek	Marion	3 — Serious	15,943	Fair
I-74 WB over Walnut Fork	Montgomery	3 — Serious	15,924	Fair
SR 15 over Lones Ditch	Kosciusko	3 — Serious	15,569	Fair
I-69 SB over Beanblossom Overflow	Monroe	3 — Serious	15,560	Good
Dan Jones RD over Branch Of Clarks Creek	Hendricks	3 — Serious	15,550	Fair
Dan Jones RD over Branch Of Clarks Creek	Hendricks	3 — Serious	15,550	Fair
I-69 NB over Beanblossom Overflow	Monroe	3 — Serious	15,510	Fair
I-64 EB over Brush Heap Creek	Harrison	3 — Serious	15,403	Fair
US 40 over Cartersburg Branch	Hendricks	3 — Serious	15,322	Fair
US 40 over West Fk White Lick Creek	Hendricks	3 — Serious	15,322	Fair
I-64 WB over Brush Heap Creek	Harrison	3 — Serious	14,800	Fair
Broadway Avenue over White River	Delaware	3 — Serious	14,760	Fair
US 31 NB over Prairie Creek	Tipton	3 — Serious	14,559	Fair
US 31 SB over Prairie Creek	Tipton	3 — Serious	14,533	Fair
N Main Street over ST Joseph River	Elkhart	3 — Serious	14,437	Fair
I-69 NB over Little Black Creek	Grant	3 — Serious	14,329	Fair
I-69 SB over Little Black Creek	Grant	3 — Serious	14,329	Good
US 41 NB over Pond Flat Ditch	Vanderburgh	3 — Serious	14,325	Poor
US 41 SB over Pond Flat Ditch	Vanderburgh	3 — Serious	14,325	Poor
I-65 SB Ramp over Lick Creek	Marion	3 — Serious	14,181	Fair
I-69 NB over Barren Creek	Grant	3 — Serious	14,139	Good
I-69 SB over Barren Creek	Grant	3 — Serious	14,139	Good
I-70 WB over Croys Creek	Putnam	3 — Serious	14,131	Fair
US 52 over Doe Creek	Hancock	3 — Serious	14,069	Fair
I-65 NB over Singleton Ditch	Lake	3 — Serious	14,069	Fair
Highland AVE over Mississinewa River	Grant	3 — Serious	14,000	Fair
High ST over White River	Delaware	3 — Serious	13,970	Fair
SR 46 over Haw Creek	Bartholomew	3 — Serious	13,675	Fair
SR 9sr 67 over Fall Creek	Madison	3 — Serious	13,631	Fair
Mayhew RD over ST Joseph River	Allen	3 — Serious	13,550	Fair
SR 7 over Fishers Fork	Bartholomew	3 — Serious	13,199	Fair
SR 67 SB over Little White Lick Creek	Morgan	3 — Serious	13,094	Good
SR 67 NB over Little White Lick Creek	Morgan	3 — Serious	12,652	Good
US 41 over White River	Gibson	3 — Serious	12,500	Good
US 31 over Hutto Creek	Scott	3 — Serious	12,500	Fair
I-65 NB over Martindale Ditch	Jasper	3 — Serious	12,481	Fair
I-65 SB over Martindale Ditch	Jasper	3 — Serious	12,481	Fair
US 41 over Patoka River	Gibson	3 — Serious	12,449	Fair
SR 25 over Wabash River N Crossing	Bartholomew	3 — Serious	12,389	Fair
SR 144 over Sinkum Ditch	Morgan	3 — Serious	11,498	Fair
US 31 NB Ramp over I-465 EB Lick Creek	Marion	3 — Serious	11,454	Fair
I-74 Wbl over Clifty Creek	Decatur	3 — Serious	11,344	Fair
US 41 NB over Kelso Creek	Knox	3 — Serious	11,254	Fair
US 41 SB over Kelso Creek	Knox	3 — Serious	11,254	Good
Nichols AVE over White River	Delaware	3 — Serious	11,250	Good
Washington ST over Mississinewa River	Grant	3 — Serious	11,210	Fair
Southport RD over White River	Marion	3 — Serious	11,120	Poor
SR 9 over Fawn River (reservoir Ar	LaGrange	3 — Serious	10,962	Good
US 52 over Prairie Creek	Boone	3 — Serious	10,947	Fair
I-469 EB over Harber Ditch	Allen	3 — Serious	10,737	Fair
I-469 WB over Harber Ditch	Allen	3 — Serious	10,737	Fair
I-74 EB over Ross Ditch	Hendricks	3 — Serious	10,720	Fair
I-74 WB over Ross Ditch	Hendricks	3 — Serious	10,720	Fair
US 31 over Flat Creek	Scott	3 — Serious	10,683	Good
I-74 Ebl over Clifty Creek	Decatur	3 — Serious	10,341	Good
Grabill RD over ST Joseph River	Allen	3 — Serious	10,300	Fair
I-69 NB over Griffy Creek	Monroe	3 — Serious	10,184	Fair
Ewing ST NB over ST Marys River	Allen	3 — Serious	10,100	Poor
Ewing ST SB over ST Marys River	Allen	3 — Serious	10,100	Fair
I-469 EB over Houk Ditch	Allen	3 — Serious	10,057	Fair
I-74 EB over West Fork Big Walnut CR	Boone	3 — Serious	10,041	Fair
I-74 WB over West Fork Big Walnut CR	Boone	3 — Serious	10,041	Fair
38th ST over Mississinewa River	Grant	3 — Serious	10,000	Fair
Commerce Drive over Canary Ditch	Johnson	3 — Serious	9,905	Fair
US 224 over ST Marys River	Adams	3 — Serious	9,815	Fair
Harrisn Brkvill RD over Kolb Creek	Dearborn	3 — Serious	9,690	Fair
SR 14 over Beal-taylor Ditch	Allen	3 — Serious	9,672	Fair
SR 66 EB over Cypress Creek	Warrick	3 — Serious	9,600	Fair
Southeastern AVE over Pleasant Run	Marion	3 — Serious	9,543	Fair
SR 7 over Sand Creek	Jennings	3 — Serious	9,349	Good
Memorial Drive over White River	Delaware	3 — Serious	9,340	Poor
Nebo Road over White River	Delaware	3 — Serious	9,270	Good
US 52 over Lauramie Creek	Tippecanoe	3 — Serious	9,205	Fair
Holt R0ad over Little Eagle Creek	Marion	3 — Serious	8,956	Fair
SR 111 over Middle Creek	Floyd	3 — Serious	8,918	Fair
SR 37 SB over Clear Creek	Monroe	3 — Serious	8,790	Fair
SR 37 NB over Clear Creek	Monroe	3 — Serious	8,720	Fair
I-74 WB over Little Sugar Creek	Montgomery	3 — Serious	8,700	Good
SR 28 over Little Duck Creek	Madison	3 — Serious	8,673	Fair
US 40 over Brandywine Creek	Hancock	3 — Serious	8,593	Fair
US 40 over Little Brandywine Creek	Hancock	3 — Serious	8,593	Fair
I-64 Ebl over Plum Creek	Warrick	3 — Serious	8,539	Fair
I-64 Wbl over Plum Creek	Warrick	3 — Serious	8,539	Fair
I-469 WB over Houk Ditch	Allen	3 — Serious	8,521	Good
US 40 over Johnson Branch	Putnam	3 — Serious	8,470	Good
SR 26 over W Fork Ltl Wildcat CR	Howard	3 — Serious	8,417	Fair
SR 60 over Middle Fork Blue River	Washington	3 — Serious	8,309	Fair
US 31 over Silver Creek	Clark	3 — Serious	8,166	Good
SR 18 WB over Boots Creek	Grant	3 — Serious	7,943	Fair
SR 19 over Cicero Creek (morse Res)	Hamilton	3 — Serious	7,800	Fair
SR 11 over East Fork White River	Jackson	3 — Serious	7,762	Fair
SR 11 over E Fk White River Ovfl	Jackson	3 — Serious	7,762	Fair
SR 11 over Denios Creek	Bartholomew	3 — Serious	7,726	Fair
US 27 over Blue Creek	Adams	3 — Serious	7,703	Good
SR 26 over M Fork Wildcat Creek	Clinton	3 — Serious	7,510	Good
SR 32 over Finley Creek	Boone	3 — Serious	7,502	Poor
SR 43 over Drainage Ditch	White	3 — Serious	7,495	Fair
Branson ST over Mississinewa River	Grant	3 — Serious	7,460	Poor
Division ST over ST Joseph River	Elkhart	3 — Serious	7,436	Good
US 36 over Honey Creek	Henry	3 — Serious	7,419	Fair
SR 56 over Big Ox Creek	Scott	3 — Serious	7,352	Good
US 31 over Little Sand Creek	Bartholomew	3 — Serious	7,285	Fair
US 31 SB over Big Blue River	Johnson	3 — Serious	7,059	Fair
SR 18 EB over Boots Creek	Grant	3 — Serious	7,055	Good
SR 32 over Big Eagle Creek	Boone	3 — Serious	7,040	Good
SR 101 over E Fork Whitewater River	Franklin	3 — Serious	6,960	Fair
Middlebury ST over Elkhart River	Elkhart	3 — Serious	6,944	Fair
SR 13 over Fall Creek	Madison	3 — Serious	6,928	Poor
US 40 over Dewey Branch	Putnam	3 — Serious	6,907	Fair
US 31 NB over Big Blue River	Johnson	3 — Serious	6,849	Fair
US 40 over Walnut Creek	Putnam	3 — Serious	6,793	Fair
US 41 NB over Vieke Ditch	Knox	3 — Serious	6,725	Fair