Scour-Critical Bridges in Kansas

Kansas has 635 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
I35 HWY SB over Turkey CR Mill Street	Wyandotte	3 — Serious	52,500	Good
I35 HWY NB over Turkey CR Mill Street	Wyandotte	3 — Serious	52,500	Good
Us75 HWY W Lane SB over Kansas River Up Rr	Shawnee	3 — Serious	23,650	Fair
I435 HWY NB over Connor Creek	Wyandotte	3 — Serious	19,800	Fair
I435 HWY SB over Connor Creek	Wyandotte	3 — Serious	19,800	Good
Us69 North Bound over Turkey Creek	Johnson	3 — Serious	19,581	Good
I135 HWY NB over Arkansas River	Sedgwick	3 — Serious	18,907	Fair
I-70 HWY EB (kta) over Stranger Creek	Leavenworth	3 — Serious	17,396	Good
I-70 HWY WB (kta) over Stranger Creek	Leavenworth	3 — Serious	17,396	Good
I-70 HWY EB (kta) over Wolf Creek	Leavenworth	3 — Serious	17,396	Good
I-70 HWY WB (kta) over Wolf Creek	Leavenworth	3 — Serious	17,396	Fair
I470 HWY WB over Shunganunga Creek	Shawnee	3 — Serious	15,800	Fair
I470 HWY EB over Shunganunga Creek	Shawnee	3 — Serious	15,800	Fair
Us69 HWY SB over Blue River	Johnson	3 — Serious	14,313	Good
Washington Street over Republican River	Geary	3 — Serious	13,800	Poor
Rs2214 WB Grant Av over Republican River	Geary	3 — Serious	12,505	Fair
I-135 Southbound over Jester Creek	Harvey	3 — Serious	12,200	Good
I-135 Northbound over Jester Creek	Harvey	3 — Serious	12,200	Good
K15 HWY NB over Arkansas River Drainage	Sedgwick	3 — Serious	11,739	Good
I-35 HWY SB (kta) over Ninnescah River	Sumner	3 — Serious	11,227	Fair
I-35 HWY NB (kta) over Ninnescah River	Sumner	3 — Serious	11,227	Fair
I70 HWY WB over Paw Paw Creek	Wabaunsee	3 — Serious	11,016	Fair
I35 HWY SB over Mar Des Cyg Riv Pd Pass	Franklin	3 — Serious	10,506	Fair
I35 HWY NB over Mar Des Cyg Riv Pd Pass	Franklin	3 — Serious	10,506	Fair
Us54/us400 HWY WB over Dry Creek	Butler	3 — Serious	9,799	Good
Us54/us400 HWY EB over Dry Creek	Butler	3 — Serious	9,799	Good
Us54/us400 HWY WB over Whitewater River	Butler	3 — Serious	9,799	Fair
Us54/us400 HWY EB over Whitewater River	Butler	3 — Serious	9,799	Fair
I-35 HWY SB (kta) over Slate Creek	Sumner	3 — Serious	9,503	Fair
I-35 HWY NB (kta) over Slate Creek	Sumner	3 — Serious	9,503	Fair
I70 HWY WB over Hendricks Creek	Wabaunsee	3 — Serious	9,450	Fair
I70 HWY EB over Hendricks Creek	Wabaunsee	3 — Serious	9,450	Fair
I70 HWY WB over East Branch Deep Creek	Riley	3 — Serious	9,282	Fair
K-32 Highway over Mill Creek	Wyandotte	3 — Serious	8,750	Good
I70 HWY WB over Walker Creek	Ellis	3 — Serious	8,718	Good
I70 HWY EB over Walker Creek	Ellis	3 — Serious	8,718	Good
I70 HWY WB over Mulberry Creek	Saline	3 — Serious	8,650	Fair
I70 HWY EB over Mulberry Creek	Saline	3 — Serious	8,650	Fair
I70 HWY WB over North Fork Big Creek	Ellis	3 — Serious	8,367	Fair
I70 HWY EB over North Fork Big Creek	Ellis	3 — Serious	8,367	Fair
I-35 HWY SB over Badger Creek	Lyon	3 — Serious	8,350	Fair
I-35 HWY NB over Badger Creek	Lyon	3 — Serious	8,350	Fair
I70 HWY WB over Big Creek Drainage	Ellis	3 — Serious	8,250	Good
I70 HWY EB over Big Creek Drainage	Ellis	3 — Serious	8,250	Good
I-35 HWY NB over Dry Creek	Lyon	3 — Serious	8,250	Good
I-35 HWY SB over Dry Creek	Lyon	3 — Serious	8,250	Good
Us59 HWY over Labette Creek	Labette	3 — Serious	7,842	Good
I-135 HWY SB over East Emma Creek	Harvey	3 — Serious	7,752	Good
I-135 HWY NB over East Emma Creek	Harvey	3 — Serious	7,752	Good
I35 HWY SB over Frog Creek	Coffey	3 — Serious	7,350	Good
I35 HWY NB over Frog Creek	Coffey	3 — Serious	7,350	Good
Us-40 HWY WB over Riv Rr Pwrhs RD Pass RD	Douglas	3 — Serious	7,343	Good
Us-40 HWY EB over Riv Rr Pwrhs RD Pass RD	Douglas	3 — Serious	7,343	Good
I135 Us81 SB over West Emma Creek	McPherson	3 — Serious	7,140	Good
I135 Us81 NB over West Emma Creek	McPherson	3 — Serious	7,140	Good
I135 Us81 SB over Smoky Hill River	Saline	3 — Serious	7,050	Good
I135 Us81 NB over Smoky Hill River	Saline	3 — Serious	7,050	Good
Us54 HWY over Rock Creek	Allen	3 — Serious	6,854	Good
Us50 HWY over West Emma Creek	Harvey	3 — Serious	6,854	Good
I135 Us81 SB over Turkey Creek	McPherson	3 — Serious	6,834	Good
I135 Us81 NB over Turkey Creek	McPherson	3 — Serious	6,834	Good
I35 HWY SB over Long Creek	Osage	3 — Serious	6,750	Good
Us54 HWY over Walnut River	Butler	3 — Serious	6,583	Fair
Us54 HWY over Walnut River Overflow	Butler	3 — Serious	6,583	Good
US 281 HWY over Arkansas River	Barton	3 — Serious	6,053	Fair
South Avenue over Channel	Lyon	3 — Serious	6,000	Good
US 77 HWY SB over Walnut Riv & Local RD	Cowley	3 — Serious	5,944	Good
Us-400 HWY over Lightning Creek	Cherokee	3 — Serious	5,858	Good
Us83 HWY over Arkansas River	Finney	3 — Serious	5,858	Good
I-335 HWY (kta) SB over 142 Mile Creek	Lyon	3 — Serious	5,825	Fair
I-335 HWY (kta) NB over 142 Mile Creek	Lyon	3 — Serious	5,825	Good
Us-400 HWY over Neosho River	Labette	3 — Serious	5,746	Fair
Us-400 HWY over Hickory Creek	Labette	3 — Serious	5,746	Good
Rs 90 over Trib. To Coon Creek	Chase	3 — Serious	5,660	Fair
Rs 215 over Kansas River & Railroad	Douglas	3 — Serious	5,657	Good
Us-400 HWY over Little Walnut River	Butler	3 — Serious	5,627	Fair
Us59 HWY over Middle Creek	Franklin	3 — Serious	5,387	Fair
US 50 HWY over Diamond Creek	Chase	3 — Serious	5,315	Good
Us75 Us166 HWY over Cheyenne Creek	Montgomery	3 — Serious	4,986	Fair
Us54 Us69 K7 HWY over Marmaton River	Bourbon	3 — Serious	4,910	Good
Us54/us400 HWY WB over N Fork Ninnescah River	Sedgwick	3 — Serious	4,792	Good
Us54/us400 HWY EB over N Fork Ninnescah River	Sedgwick	3 — Serious	4,792	Good
K4 HWY over Rock Creek	Jefferson	3 — Serious	4,785	Fair
K53 HWY &atsf Rr over Arkansas River Drainage	Sumner	3 — Serious	4,605	Good
Us169 HWY over Coal Creek	Allen	3 — Serious	4,391	Good
U-169 HWY over Elm Creek	Allen	3 — Serious	4,371	Good
U-169 HWY over Rock Creek	Allen	3 — Serious	4,371	Good
Us169 HWY over Neosho River &local RD	Allen	3 — Serious	4,309	Good
Us160 HWY over Arkansas River Drainage	Cowley	3 — Serious	4,289	Fair
Us160 HWY over Arkansas River	Sumner	3 — Serious	4,289	Good
Us83 Bs Route over Arkansas River	Finney	3 — Serious	4,206	Fair
K66 HWY EB over Spring River	Cherokee	3 — Serious	4,096	Good
K68 HWY over Bull Creek Bnsf Rr	Miami	3 — Serious	4,016	Fair
K53 HWY over Arkansas River	Sumner	3 — Serious	3,878	Fair
K126 HWY over Second Cow Creek	Crawford	3 — Serious	3,817	Good
Us183 Bypass over Big Creek	Ellis	3 — Serious	3,622	Fair
Us-400 HWY over Arkansas River	Ford	3 — Serious	3,622	Good
Radio Lane over C Street Canal	Cowley	3 — Serious	3,620	Fair
Us77 HWY over Arkansas River	Cowley	3 — Serious	3,602	Fair
Us183 HWY over Smoky Hill River	Ellis	3 — Serious	3,581	Fair
Us83 HWY over Plum Creek	Logan	3 — Serious	3,558	Good
K15 HWY over Walnut River Drainage	Cowley	3 — Serious	3,509	Fair
K15 HWY over Walnut River	Cowley	3 — Serious	3,509	Fair
K15 HWY over Stewart Creek Drainage	Cowley	3 — Serious	3,488	Fair
K15 HWY over Stewart Creek	Cowley	3 — Serious	3,488	Fair
Us54 HWY over Mill Creek	Bourbon	3 — Serious	3,458	Fair
Us54 HWY over Walnut River	Butler	3 — Serious	3,377	Fair
Wyandotte ST over Kansas River & Bnsf Rr	Johnson	3 — Serious	3,300	Fair
Us56 HWY over Pawnee River	Pawnee	3 — Serious	3,232	Fair
K126 HWY over East Cow Creek Overflow	Crawford	3 — Serious	3,207	Good
K126 HWY over East Cow Creek	Crawford	3 — Serious	3,207	Good
Us56 HWY over Little Arkansas River	Rice	3 — Serious	3,191	Fair
Rs 209 over Kansas River	Douglas	3 — Serious	3,128	Good
Us69 HWY SB over North Sugar Creek	Linn	3 — Serious	3,109	Good
Us77 HWY over Little Walnut River	Butler	3 — Serious	3,068	Fair
Us69 HWY NB over Big Sugar Creek	Linn	3 — Serious	3,063	Good
Us36 HWY over N F Blk Vermillion R Drn	Marshall	3 — Serious	3,045	Good
Us59 HWY over Labette Creek Drainage	Labette	3 — Serious	3,016	Fair
Us59 HWY over Bachelor Creek	Labette	3 — Serious	3,016	Fair
Us56 HWY over North Cottonwood River	Marion	3 — Serious	2,923	Good
US 75 HWY over Marais Des Cygnes River	Osage	3 — Serious	2,760	Fair
Us54/us400 HWY EB over S F Ninnescah River	Kingman	3 — Serious	2,720	Good
Us50 HWY over Coon Creek	Edwards	3 — Serious	2,688	Good
Us24 HWY & Us40 Hw over Nine Mile Creek	Leavenworth	3 — Serious	2,650	Fair
K196 HWY over Jester Creek	Harvey	3 — Serious	2,627	Good
Us166 HWY WB over Onion Creek	Montgomery	3 — Serious	2,627	Fair
Us166 HWY EB over Onion Creek	Montgomery	3 — Serious	2,627	Good
Us73 Us159 HWY over Wolf River	Brown	3 — Serious	2,619	Fair
SB Us69 HWY over W Fk Dry Wood Creek	Bourbon	3 — Serious	2,601	Fair
Us-77 Highway over Rock Creek	Cowley	3 — Serious	2,575	Good
WB Us54/us400 HWY over Ninnescah (s F) River	Kingman	3 — Serious	2,565	Good
US 75 HWY over Frog Creek	Osage	3 — Serious	2,555	Fair
Us77 HWY over Wildcat Creek	Riley	3 — Serious	2,524	Good
Us183 HWY over Solomon River	Rooks	3 — Serious	2,514	Good
Us54 HWY over Burnt Creek	Greenwood	3 — Serious	2,462	Fair
Us69/us400 HWY over Little Shawnee Creek	Cherokee	3 — Serious	2,401	Good
Us81 HWY over Slate Creek	Sumner	3 — Serious	2,391	Fair
K49 HWY over North Branch Slate Creek	Sumner	3 — Serious	2,370	Good
Ave. Q \| Rs 445 over Trib. To Cow Creek	Rice	3 — Serious	2,260	Fair
Us50 HWY over Arkansas River Drainage	Hamilton	3 — Serious	2,257	Good
K177 HWY over Cottonwood River	Chase	3 — Serious	2,247	Good
Us54 K99 HWY over Bachelor Creek	Greenwood	3 — Serious	2,216	Good
Us59 HWY over Canville Creek	Neosho	3 — Serious	2,175	Fair
Us56 HWY over Clear Creek	Marion	3 — Serious	2,156	Fair
Us56 Us77 HWY over Lime Creek Drainage	Dickinson	3 — Serious	2,083	Fair
Us24 HWY over Cris Creek	Cloud	3 — Serious	2,029	Fair
53rd. over Middle Fork Chisholm Ck.	Sedgwick	3 — Serious	2,026	Poor
Loring Ave. over Little Kaw Creek	Wyandotte	3 — Serious	2,020	Fair
Us166 HWY over Fly Creek	Cherokee	3 — Serious	1,960	Fair
Us24 HWY over Mortimer Creek	Cloud	3 — Serious	1,939	Fair
K99 HWY over Boxelder Creek	Pottawatomie	3 — Serious	1,908	Fair
Us-36 Highway over East Cedar Creek	Smith	3 — Serious	1,900	Fair
K-23 Highway over Arkansas River	Gray	3 — Serious	1,898	Good
Us-160 HWY over Neosho River Drainage	Labette	3 — Serious	1,888	Fair
Us77 HWY over Baldwin Creek	Riley	3 — Serious	1,878	Fair
K99 HWY over Jim Creek	Marshall	3 — Serious	1,764	Fair
Us59 HWY over Labette Creek	Labette	3 — Serious	1,754	Fair
K99 HWY over Neosho River	Lyon	3 — Serious	1,724	Fair
US 56 HWY over Big John Creek	Morris	3 — Serious	1,713	Fair
K27 HWY over Sf Beaver CR	Sherman	3 — Serious	1,549	Good
K4 HWY over East Dry Creek	Saline	3 — Serious	1,533	Fair
K99 HWY over Elk River	Elk	3 — Serious	1,508	Good
Us-160 HWY over Pumpkin Creek	Labette	3 — Serious	1,498	Fair
Us-160 HWY over Pumpkin Creek Drainage	Labette	3 — Serious	1,498	Fair
Us160 HWY over Spring Creek	Sumner	3 — Serious	1,498	Fair
Us160 HWY over Brook Creek	Sumner	3 — Serious	1,498	Good
Us160 HWY over Chikaskia River Drainage	Sumner	3 — Serious	1,498	Good
K27 HWY over Little Bear Creek	Hamilton	3 — Serious	1,488	Good
Us59 K31 HWY over Deer Creek	Anderson	3 — Serious	1,467	Fair
Us183 HWY over Otter Creek	Rush	3 — Serious	1,416	Good
K18 HWY over Solomon River	Ottawa	3 — Serious	1,370	Fair
Us283 HWY over Saline R Drainage	Graham	3 — Serious	1,324	Fair
Us160 HWY over Cottonwood Creek	Harper	3 — Serious	1,293	Good
K15 HWY over Marion Res. Drainage	Marion	3 — Serious	1,292	Fair
64 Road (rs 2000) over South Beaver Creek	Sherman	3 — Serious	1,280	Good
K14 HWY over Leban Creek	Mitchell	3 — Serious	1,246	Good
IRR Indian 20 HWY over Delaware River	Brown	3 — Serious	1,212	Fair
K7 HWY over Independence Creek	Atchison	3 — Serious	1,210	Fair
Us281 HWY over Spring Creek	Smith	3 — Serious	1,164	Good
K4 HWY over Dry Creek	Saline	3 — Serious	1,141	Poor
K4 HWY over Smoky Hill River	Saline	3 — Serious	1,141	Fair
K27 HWY over N Fork Ladder Creek	Wallace	3 — Serious	1,139	Fair
Us160 HWY over Keiger Creek	Clark	3 — Serious	1,129	Fair
Lb-4 Mary Street over Nine Mile Creek	Leavenworth	3 — Serious	1,105	Good
K58 HWY over Neosho River Drainage	Coffey	3 — Serious	1,098	Good
Us81 HWY over Chikaskia River	Sumner	3 — Serious	1,088	Good
Us160 HWY over Bachelor Creek	Harper	3 — Serious	1,077	Good
K9 HWY over Coon Creek	Washington	3 — Serious	1,074	Fair
K2 HWY over Bluff Creek	Harper	3 — Serious	1,067	Fair
K14 HWY over Rose Bud Creek	Kingman	3 — Serious	1,057	Fair
K58 HWY over Crooked Creek	Coffey	3 — Serious	1,036	Fair
K23 HWY over Sand Creek	Sheridan	3 — Serious	1,031	Fair
K-2 HWY over Little Mule Creek	Barber	3 — Serious	995	Fair
Us56 HWY over Allen Creek	Lyon	3 — Serious	995	Good
US 24 HWY over Sand Creek	Graham	3 — Serious	981	Good
K130 HWY over Neosho River	Lyon	3 — Serious	975	Good
K9 HWY over Robidoux Creek	Marshall	3 — Serious	964	Poor
K99 HWY over Bernard Creek	Greenwood	3 — Serious	903	Fair
Us160 HWY over Duck Creek	Montgomery	3 — Serious	887	Good
18th ST A.55-1.50 over Three Mile Creek	Leavenworth	3 — Serious	880	Fair