Culvert bridges in Montana

A pipe or box structure carrying water beneath the roadway. Culverts over 20 feet long are counted as bridges. Montana has 363 of them, 6.9% of its bridges. Nationally this type accounts for 23.8% of all bridges.Compare states for this type.

Culvert bridges: 363
Poor condition: 4%; 15 bridges
Average age: 32.1 yrs
Combined length: 2 mi

Busiest culvert bridges in Montana

Top 200 by daily traffic

Bridge	County	Location	Built	Type	Length	Daily traffic	Condition
I90 over Mt Power RR Spur No. 000000202301763	Yellowstone County	Billings	2023	Culvert	54 ft	29,488	Good
I 90 over City County Drain Ditch No. I00090448+04001	Yellowstone County	Billings	1966	Culvert	23 ft	27,985	Fair
I 90 over Grant Creek No. I00090101+07001	Missoula County	Reserve ST Int Missoula	1965	Culvert	32 ft	27,328	Good
S Orange ST over Pedestrian-Bike Path No. U08107001+04101	Missoula County	Missoula-S Orange ST	2002	Culvert	22 ft	22,608	Good
I 15 over Bell Creek No. 000000202408081	Silver Bow County	W Oregon Ave Overpass	1963	Culvert	32 ft	19,755	Fair
Spokane Ave over Whitefish River No. P00005127+01001	Flathead County	Whitefish-Spokane Ave	1959	Culvert	60 ft	16,086	Good
IRR - US 93 over Pablo Feeder Canal No. P00005057+00641	Lake County	2M SE Polson	2006	Culvert	22 ft	15,997	Good
I-90 E&w over Abandoned Railroad No. 000000201908001	Silver Bow County	2.5M S Opportunity	2019	Culvert	22 ft	15,011	Good
I 90 over Harvey Creek No. I00090141+01001	Granite County	3M E Bearmouth Int	1970	Culvert	23 ft	13,081	Good
I 90 over Drainage No. I00090142+09001	Granite County	4.8M E Bearmouth Int	1971	Culvert	25 ft	13,081	Good
I 90 over Cove Irrigation Ditch No. I00090419+08771	Stillwater County	6.2M W Park City	1970	Culvert	20 ft	12,321	Good
I 90 over Spring Creek No. I00090377+05001	Sweet Grass County	1M NW Greycliff	1980	Culvert	22 ft	12,306	Fair
US 93 over Wildlife Underpass No. P00007069+09281	Ravalli County	3M N Stevensville	2006	Culvert	22 ft	11,313	Good
Old HWY 312 over Bbwa Canal 166 No. L56788005+04001	Yellowstone County	4M NE Billings	2005	Culvert	25 ft	11,260	Good
Old HWY 312 over Bbwa Canal 167 No. L56788005+08001	Yellowstone County	5M NE Billings	2005	Culvert	21 ft	11,260	Fair
US 93 over Wildlife Crossing No. 000000202108030	Lake County	2 Miles North of Ronan	2007	Culvert	29 ft	10,897	Good
US 93 over Wildlife Crossing No. P00005048+06731	Lake County	2M NE Ronan	2007	Culvert	28 ft	10,897	Good
US 93 over Agricultural Crossing No. P00005049+02721	Lake County	2M N Ronan	2007	Culvert	28 ft	10,897	Good
I 90 over Work Creek No. I00090388+03001	Sweet Grass County	3.7M W Reed Point	1972	Culvert	21 ft	10,845	Fair
I 90 over Dempsey Creek No. I00090192+03001	Powell County	N Sager Lane Overpass	1973	Culvert	30 ft	10,708	Fair
I 90 over Whitetail Creek No. I00090249+04001	Silver Bow County	1M E Whitehall	1965	Culvert	30 ft	10,349	Fair
US 93 over Wildlife Crossing No. P00005008+07901	Missoula County	9M N Wye Int	2009	Culvert	31 ft	9,214	Good
US 93 over Wildlife Underpass No. P00005010+00391	Missoula County	10M N Wye JCT	2009	Culvert	32 ft	9,214	Fair
US 93 over Wildlife Underpass No. P00005010+02761	Missoula County	10M N Wye Int	2009	Culvert	27 ft	9,214	Good
US 93 over Wildlife Underpass No. P00005010+05211	Missoula County	11M N Wye Int	2009	Culvert	25 ft	9,214	Good
US 93 over Wildlife Underpass No. P00005010+08211	Missoula County	11M N Wye Int	2009	Culvert	26 ft	9,214	Good
US 93 over Wildlife Upass-Schley CR No. P00005011+08881	Missoula County	12M N Wye Int	2009	Culvert	26 ft	9,214	Good
US 93 over Wildlife Upass-Finley CR No. P00005012+02421	Missoula County	12M N Wye Int	2009	Culvert	26 ft	9,214	Good
US 93 over Wildlife Underpass No. P00005024+02321	Lake County	S of Ravalli	2006	Culvert	23 ft	8,775	Good
US 93 over Wildlife Underpass No. P00005024+07981	Lake County	S of Ravalli	2006	Culvert	23 ft	8,775	Good
US 93 over Wildlife Upass-Drainage No. P00005026+04161	Lake County	1M S Ravalli	2006	Culvert	25 ft	8,775	Good
US 93 over Wildlife Upass-Drainage No. P00005033+07751	Lake County	1M N ST Ignatius	2006	Culvert	26 ft	8,659	Good
US 93 over Wildlife Upass-Drainage No. P00005034+00541	Lake County	2M N ST Ignatius	2006	Culvert	28 ft	8,659	Good
US 93 over Wildlife Upass-Drainage No. P00005034+03601	Lake County	3M N ST Ignatius	2006	Culvert	26 ft	8,659	Good
I 90 over Irrigation Canal No. I00090498+04621	Big Horn County	3.1M S Hardin	1971	Culvert	25 ft	8,516	Fair
I 90 over Drainage No. I00090033+01001	Mineral County	St. Regis	1986	Culvert	21 ft	8,111	Good
US 93 over Wildlife Underpass No. P00005057+07611	Lake County	1M SE Polson	2006	Culvert	24 ft	7,999	Good
US 93 over Wildlife Underpass No. P00005057+07612	Lake County	1M SE Polson	2006	Culvert	24 ft	7,999	Good
US 93 over Wildlife Upass-Relief No. P00005028+01081	Lake County	1M N Ravalli	2006	Culvert	28 ft	7,746	Good
US 93 over Wildlife Upass-Drainage No. P00005028+03711	Lake County	1M N Ravalli	2006	Culvert	28 ft	7,746	Good
US 93 over Wildlife Upass-Drainage No. P00005030+05371	Lake County	2M S ST Ignatius	2006	Culvert	24 ft	7,746	Good
US 93 over Wildlife Upass-Drainage No. P00005030+07281	Lake County	2M S ST Ignatius	2006	Culvert	27 ft	7,746	Good
US 93 over Sabine Creek-Wildlife No. P00005031+07421	Lake County	1M S ST Ignatius	2006	Culvert	24 ft	7,746	Good
US287 over Beaver Creek No. 000000202308064	Broadwater County	1 M NW Winston	1992	Culvert	20 ft	6,930	Fair
US 287 over Mud Spring Gulch No. 000000000007036	Broadwater County	5M NW Three Forks	2013	Culvert	40 ft	6,444	Good
Shields Ave over Drainage No. 000000202308071	Silver Bow County	Butte-Shields Ave	1958	Culvert	30 ft	6,411	Fair
US 287 over Six Mile Creek No. 000000202005330	Broadwater County	1M N Toston	2020	Culvert	25 ft	5,250	Good
I 94 over Drainage No. I00094015+04531	Yellowstone County	1.2M E Ballentine	1968	Culvert	20 ft	5,221	Fair
Lone Mountain Trl over N Fk W Gallatin Riv 005 No. L16064003+09001	Gallatin County	4M W Big Sky	1982	Culvert	20 ft	5,180	Good
I 15 over Wolf Creek No. I00015226+03131	Lewis and Clark County	Wolf Creek	1966	Culvert	34 ft	5,109	Fair
I 94 over Sep RR No. I00094071+04801	Treasure County	18.6M E Bighorn	1973	Culvert	24 ft	5,042	Good
US 310 over Sand Creek No. P00004029+01101	Carbon County	4M S Fromberg	1987	Culvert	26 ft	4,907	Good
I 15 over Little Prickly Pear CR No. I00015218+06001	Lewis and Clark County	2M NW Seiben Int	1965	Culvert	25 ft	4,806	Good
I 94 over Lignite Creek No. I00094129+09841	Custer County	8M SW Miles City	1964	Culvert	35 ft	4,724	Fair
I 94 over Coal Creek No. I00094131+08821	Custer County	7M SW Miles City	1963	Culvert	24 ft	4,724	Fair
I 94 over Vehicle Pass No. I00094151+03081	Custer County	13M NE Miles City	1986	Culvert	20 ft	4,697	Good
S 200 over Second Hay Creek No. P00020060+00061	Richland County	2M SW Fairview	1986	Culvert	29 ft	4,499	Good
I 94 over Bad Route Creek No. I00094192+03101	Dawson County	18M SW Glendive	1973	Culvert	58 ft	4,438	Fair
I 94 over Jones Creek-Stockpass No. I00094146+05101	Custer County	8M NE Miles City	1962	Culvert	24 ft	4,393	Fair
I 94 over Cracker Box Creek No. I00094197+00001	Dawson County	13M SW Glendive	1973	Culvert	34 ft	4,317	Fair
I 94 over Clear Creek No. I00094201+09101	Dawson County	10M SW Glendive	1973	Culvert	52 ft	4,317	Poor
I 15 over Rock Creek No. I00015230+03001	Lewis and Clark County	3M N Wolf Creek	1967	Culvert	30 ft	4,290	Good
I 15 over Dog Creek No. I00015233+06001	Lewis and Clark County	1M S Craig	1967	Culvert	23 ft	4,290	Fair
IRR - US 2 over Mosquito Creek No. P00001591+06061	Roosevelt County	1M E Wolf Point	1986	Culvert	41 ft	4,269	Fair
IRR - US 2 over Little Wolf Creek No. P00001592+06081	Roosevelt County	2M E Wolf Point	1988	Culvert	33 ft	4,269	Fair
I 94 over Whoopup Creek No. I00094204+05701	Dawson County	6M SW Glendive	1976	Culvert	30 ft	4,221	Fair
I 94 over Sand Creek No. I00094206+08501	Dawson County	4M SW Glenidve	1976	Culvert	41 ft	4,221	Fair
I 15 over Drainage IRR Ditch No. I00015064+04001	Beaverhead County	Dillon	1973	Culvert	23 ft	3,915	Fair
US 287 over Hot Springs Creek No. P00013065+02481	Madison County	Norris	1997	Culvert	26 ft	3,900	Good
I 94 over Ash Creek No. I00094178+04401	Prairie County	2M E Terry	1969	Culvert	30 ft	3,878	Fair
I 15 over Birch Creek No. I00015077+02001	Beaverhead County	13M N Dillon	1973	Culvert	26 ft	3,852	Fair
US 2 over Drainage No. P00001390+04781	Hill County	7M E Havre	2011	Culvert	26 ft	3,678	Good
I 94 over Yates Creek No. I00094243+03501	Wibaux County	1M E Wibaux	1962	Culvert	32 ft	3,592	Fair
I 94 over Yates Creek No. I00094244+03001	Wibaux County	2M E Wibaux	2000	Culvert	52 ft	3,592	Fair
US 87 over Dawkins Branch No. 000000202108040	Judith Basin County	5.271M E Hobson	2021	Culvert	20 ft	3,335	Good
I 15 over S Pondera Coulee No. I00015331+00001	Pondera County	3M N Brady	1964	Culvert	47 ft	3,248	Fair
I 15 over Red Rock Creek No. I00015152+09001	Jefferson County	1M N Bernice	1984	Culvert	22 ft	3,182	Good
S 3 over North Fork Alkali Creek No. P00053011+09351	Yellowstone County	8M NW Billings	1992	Culvert	24 ft	2,972	Good
S 200 over Cottonwood Creek No. P00024037+03001	Powell County	7M W Ovando	1954	Culvert	24 ft	2,822	Good
S 16 over Crane Creek No. P00020041+03501	Richland County	Crane	1957	Culvert	37 ft	2,821	Poor
S 56th Street West over Bbwa Canal No. 000000202404808	Yellowstone County	Billings-S 56th ST W	2024	Culvert	30 ft	2,802	Good
US 87 over Stockpass No. P00057024+02201	Judith Basin County	3M E Geyser	1961	Culvert	23 ft	2,753	Good
US 212 over Drainage No. 000000202408079	Carter County	2M NW Alzada	1965	Culvert	24 ft	2,642	Fair
US 191 FH 42 over Teepee Creek No. P00050011+01001	Gallatin County	11M N West Yellowstone	1962	Culvert	29 ft	2,605	Poor
US 191 FH 42 over Grayling Creek No. P00050014+05001	Gallatin County	14M N West Yellowstone	1962	Culvert	39 ft	2,605	Fair
US 191 FH 42 over Grayling Creek No. P00050014+08001	Gallatin County	15M N West Yellowstone	1962	Culvert	39 ft	2,605	Fair
US 191 over Grayling Creek No. P00050015+01001	Gallatin County	15M N West Yellowstone	1962	Culvert	47 ft	2,605	Poor
US 191 over Grayling Creek No. P00050016+02001	Gallatin County	16M N West Yellowstone	1962	Culvert	39 ft	2,605	Fair
US 212 over E Fk Little Powder River No. P00023087+01971	Powder River County	8M SE Broadus	1983	Culvert	23 ft	2,594	Fair
IRR - US 2 over Moccasin Creek No. P00001160+06501	Flathead County	6M E West Glacier	1972	Culvert	33 ft	2,491	Fair
HWY 282 over Prickly Pear Creek No. 000000202407044	Jefferson County	2.3 S Montana City	2024	Culvert	22 ft	2,485	Good
Lake ST over Baker Lake Overflow No. P00027035+01721	Fallon County	Baker-Lake ST	2009	Culvert	35 ft	2,393	Good
US 87 over Otter Creek No. P00057011+04001	Judith Basin County	1M SE Raynesford	1964	Culvert	37 ft	2,361	Fair
US 191 over Dawkins Branch No. 000000202108042	Fergus County	3M SW Moore	2021	Culvert	20 ft	2,328	Good
US 87 over Drainage No. 000000202108041	Fergus County	7.125M E Hobson	2021	Culvert	20 ft	2,319	Good
US 87 over Little Rock Cr-Stockpass No. P00057071+09321	Fergus County	4M NE Moore	2009	Culvert	22 ft	2,319	Good
S 16 over Garden Coulee-Stockpass No. P00020031+02501	Richland County	1M S Savage	1975	Culvert	23 ft	2,313	Fair
US 212 over E Fork Otter Creek No. P00037067+04821	Powder River County	5M E Ashland	1992	Culvert	44 ft	2,305	Good
US 191 over Ross Fork Creek No. P00063020+07951	Fergus County	2M N Judith Gap	1990	Culvert	20 ft	2,250	Fair
US 191 over Ross Fork Creek No. P00063021+01891	Fergus County	2M S Garneill	1990	Culvert	20 ft	2,250	Good
S 16 over Three Mile Creek No. P00020007+00501	Dawson County	7M NE Glendive	1964	Culvert	27 ft	2,240	Fair
US 212 over Pumpkin Creek No. P00037085+02701	Powder River County	20M W Broadus	2012	Culvert	32 ft	2,197	Good
S 200 over Beaver Creek No. P00024069+05001	Lewis and Clark County	2M W Lincoln	1993	Culvert	22 ft	2,140	Good
S 200 over Keep Cool Creek No. P00024069+07191	Lewis and Clark County	2M W Lincoln	1993	Culvert	26 ft	2,140	Good
US 2 over Two Medicine IRR Canal No. P00001246+08001	Glacier County	7M W Cut Bank	1942	Culvert	50 ft	2,130	Fair
IRR - US 2 over Chelsea Creek No. P00001603+00001	Roosevelt County	12M E Wolf Point	1960	Culvert	37 ft	2,054	Poor
US 12 over Nine Mile Creek No. P00014139+07601	Golden Valley County	7M W Lavina	1990	Culvert	21 ft	2,040	Fair
Churchill RD over Stockpass Darinage No. 000000202406587	Gallatin County	3M S Manhattan	2024	Culvert	22 ft	2,002	Good
Churchill RD S 288 over Camp Creek No. 000000202406588	Gallatin County	2M N Amsterdam	2024	Culvert	26 ft	2,002	Good
US 2 over Goudge Coulee No. P00001546+01061	Valley County	4M SE Glasgow	1994	Culvert	24 ft	1,967	Fair
US 2 over Whately Creek No. P00001548+04231	Valley County	6M SE Glasgow	1987	Culvert	36 ft	1,967	Fair
IRR - US 87 over School Section Coulee No. 000000000008092	Chouteau County	4M N Big Sandy	1970	Culvert	24 ft	1,694	Good
IRR - US 87 over Big Sandy Creek No. P00010082+09131	Chouteau County	3M N Big Sandy	1990	Culvert	24 ft	1,694	Good
US 2 over Swamp Creek No. P00001045+01241	Lincoln County	11M S Libby	2013	Culvert	35 ft	1,642	Fair
Mt 141 over Threemile Creek No. 000000202208060	Powell County	2 M N Avon	1961	Culvert	27 ft	1,594	Good
Taylor Avenue over Cains Coulee 097 No. M11050000+00701	Dawson County	Glendive-S Taylor Ave	1965	Culvert	30 ft	1,562	Fair
S 5 over Marron Creek No. P00022043+03681	Sheridan County	1M E Plentywood	1983	Culvert	25 ft	1,559	Fair
S 16 over Ator Creek No. P00022046+03361	Sheridan County	3M NW Antelope	1984	Culvert	25 ft	1,559	Fair
N Kendrick Avenue over Graveyard Coulee 093 No. M11050000+00301	Dawson County	Glendive-N Kendrick Ave	1965	Culvert	33 ft	1,533	Fair
S 200 over Flat Creek No. P00024111+02361	Lewis and Clark County	16M SW Simms	1986	Culvert	41 ft	1,507	Fair
US 2 over Richardson Coulee No. P00001537+06421	Valley County	4M NW Glasgow	1979	Culvert	28 ft	1,484	Fair
US 2 over Exeter Creek No. P00001467+06721	Phillips County	4M W Malta	1990	Culvert	26 ft	1,474	Good
Murphy LN over Irrigation Canal 003 No. L34206000+02001	Park County	E Emigrant	2003	Culvert	29 ft	1,471	Good
IRR - S 13 over Drainage No. P00025051+03741	Roosevelt County	1M E Wolf Point	1978	Culvert	41 ft	1,468	Fair
IRR - US 2 over Drainage No. P00001615+02681	Roosevelt County	3M E Poplar	1970	Culvert	21 ft	1,452	Poor
IRR - US 2 over Drainage No. P00001624+00391	Roosevelt County	2M W Brockton	1970	Culvert	21 ft	1,402	Good
IRR BIA RTE 2 over Box Elder Creek No. 00000000000C916	Hill County	1.3 KM N Rocky Boys Agcy	1992	Culvert	21 ft	1,400	Fair
IRR - US 2 over Drainage No. P00001453+03801	Phillips County	1M W Dodson	1973	Culvert	44 ft	1,351	Poor
US 2 over Beaver Creek Overflow No. P00001506+06491	Valley County	6M NW Hinsdale	1987	Culvert	21 ft	1,310	Fair
US 2 over Beaver Creek Overflow No. P00001501+04181	Phillips County	2M E Saco	1987	Culvert	37 ft	1,274	Fair
US 2 over Dodson Creek Overflow No. P00001456+00301	Phillips County	2M E Dodson	2008	Culvert	30 ft	1,252	Good
US 2 over Spring Creek No. P00001457+06701	Phillips County	3M E Dodson	2008	Culvert	35 ft	1,252	Good
S 21-S Main ST over Pondera Coulee No. P00021003+08001	Pondera County	Conrad by Fleet Supply	1934	Culvert	38 ft	1,245	Good
Inner Belt Loop over Alkali Creek 208 No. M56010001+00101	Yellowstone County	3M NW Billings	2014	Culvert	83 ft	1,178	Good
S 16 over N Fork 1st Hay Creek No. P00062024+00271	Richland County	13M NW Sidney	2003	Culvert	29 ft	1,131	Fair
S 5 over Antelope Creek No. P00022051+03461	Sheridan County	2M S Antelope	1986	Culvert	20 ft	1,120	Good
S 44 over Irrigation Canal No. P00044011+06051	Pondera County	2M W Valier	2003	Culvert	30 ft	1,097	Good
S Sargent Avenue over Cains Coulee 096 No. M11050000+00601	Dawson County	Glendive-S Sargent Ave	1965	Culvert	30 ft	1,025	Fair
Giant Springs RD over Rivers Edge Trail No. U05221000+09101	Cascade County	Great Falls	2002	Culvert	30 ft	1,015	Good
S 16 over Day Creek No. P00062005+03571	Richland County	4M SE Culbertson	2009	Culvert	21 ft	1,014	Good
IRR BIA RTE 006 over Box Elder Creek No. 00000000000C918	Hill County	2 KM SE of Box Elder	2000	Culvert	21 ft	1,000	Fair
IRR - S 13 over Drainage No. P00025039+07001	McCone County	10M N Vida	1995	Culvert	38 ft	985	Fair
IRR - S 13 over Drainage-Stockpass No. P00025041+03001	McCone County	11M N Vida	1995	Culvert	20 ft	985	Good
IRR - S 13 over Nickwall Creek No. P00025041+09891	McCone County	12M N Vida	1995	Culvert	24 ft	985	Fair
S 531-WESTSIDE RD over Sawtooth Creek No. S00531003+04001	Ravalli County	3M SW Hamilton	1972	Culvert	54 ft	972	Fair
S 59 over Mill Creek-Stockpass No. P00023009+05021	Custer County	7M SE Miles City	1986	Culvert	32 ft	942	Fair
S 59 over North Woman Creek No. P00023011+02251	Custer County	9M SE Miles City	1986	Culvert	28 ft	942	Good
S 16 over Lost Creek No. P00022072+08681	Roosevelt County	3M N Froid	1976	Culvert	30 ft	918	Fair
S Frontage RD 011 over Abandoned RR 043 No. L39242007+06001	Powell County	8M S Deer Lodge	2014	Culvert	24 ft	916	Good
S 13 over Lost Creek No. P00025005+05751	McCone County	5M NE Circle	1988	Culvert	29 ft	910	Fair
IRR - S 13 over Gady Coulee No. P00025035+04231	McCone County	5M N Vida	1994	Culvert	26 ft	905	Fair
S 13 over Drainage No. P00025031+05131	McCone County	1M N Vida	1994	Culvert	29 ft	901	Good
S 13 over Drainage No. P00025034+01771	McCone County	4M N Vida	1994	Culvert	30 ft	901	Good
IRR - S 313 over Overflow Ditch No. S00313008+00411	Big Horn County	7M SW Hardin	1988	Culvert	26 ft	899	Fair
Meade Avenue over Graveyard Coulee 094 No. M11050000+00401	Dawson County	Glendive-Meade Ave	1965	Culvert	32 ft	856	Fair
Blue Creek RD over Blue Creek No. S00416007+04001	Yellowstone County	7M S Billings	1982	Culvert	30 ft	801	Good
IRR - S 13 over Manternach Coulee No. P00032048+01431	Daniels County	2M S Scobey	1988	Culvert	22 ft	795	Good
IRR - S 39 over Sheep Creek No. P00039038+06861	Rosebud County	16M NW Colstrip	1982	Culvert	46 ft	787	Fair
S 24 over Galpin Coulee No. P00042063+04091	Valley County	4M NW Fort Peck	1993	Culvert	28 ft	767	Good
S 59 over Road Creek-Stockpass No. P00023072+09281	Powder River County	6M NW Broadus	2001	Culvert	20 ft	742	Good
US 12 over Willow Creek No. P00014174+06061	Musselshell County	4M NE Roundup	1999	Culvert	22 ft	712	Fair
E Boulevard ST over Big Spring Creek No. U07104001+00801	Fergus County	Lewistown-E Boulevard ST	1920	Culvert	20 ft	675	Fair
US 89 over Foster Creek No. 000000000005181	Teton County	1M S Bynum	2018	Culvert	22 ft	654	Good
Cleveland RD over Red Rock Creek No. S00240001+01001	Blaine County	Chinook	1964	Culvert	29 ft	600	Fair
Pryor RD over 4th of July Creek 013 No. L56300019+08001	Yellowstone County	20M S Billings	2001	Culvert	26 ft	596	Good
S 5 over Plentywood Creek No. P00022036+06661	Sheridan County	5M W Plentywood	2001	Culvert	31 ft	589	Good
US 12 over Bensley Creek No. P00002009+04401	Custer County	6M E Miles City	1999	Culvert	22 ft	585	Good
IRR - S 314 over Squirrel Creek No. S00314002+05001	Big Horn County	Decker	1981	Culvert	27 ft	568	Fair
Old HWY 87 over Peritsa Creek No. 000000202002264	Big Horn County	6M W Hardin	2020	Culvert	26 ft	564	Good
US 287 over Rock Creek No. P00009001+05001	Lewis and Clark County	3M NE Wolf Creek	1967	Culvert	25 ft	564	Fair
S 200 over Oliver Coulee No. P00057217+07911	Garfield County	4M E Jordan	2004	Culvert	25 ft	520	Good
S 223 over Cottonwood Creek No. S00223050+07001	Liberty County	2M S Chester	1960	Culvert	34 ft	518	Fair
US 89 over Matchett Coulee No. P00003073+05091	Pondera County	1M SE Dupuyer	2006	Culvert	30 ft	518	Good
Forest Road over Doris Creek No. 011006000001095	Flathead County	West Side Southfork	1976	Culvert	20 ft	500	Fair
IRR - S 314 over Spring Creek No. S00314009+03001	Big Horn County	5M N Decker	1981	Culvert	46 ft	499	Fair
Alkali Creek Road over Alkali Creek No. 000000202108037	Yellowstone County	1M N Billings	2021	Culvert	47 ft	484	Good
Mt 200 over Dog Creek No. P00057162+00001	Garfield County	4M E Mosby	1985	Culvert	28 ft	483	Fair
Pendroy RD over Drainage No. S00219015+03001	Pondera County	5M W Conrad	1955	Culvert	31 ft	483	Fair
US 12 over Drainage No. P00014191+09321	Musselshell County	1M N Musselshell	2003	Culvert	24 ft	480	Good
Grantsdale RD over Skalkaho Creek 102 No. L41320001+01001	Ravalli County	N Grantsdale	1972	Culvert	55 ft	474	Fair
S 200 over Drainage-Stockpass No. 000000202106024	Garfield County	18M E Jordan	2023	Culvert	26 ft	462	Good
S 200 over Paden Coulee No. 000000202106026	Garfield County	19M E Jordan	2023	Culvert	25 ft	462	Good
S 200 over Drainage No. P00057219+08341	Garfield County	6M E Jordan	2004	Culvert	25 ft	462	Fair
US 89 FH 32 over Dry Fork Belt Creek No. P00060049+09501	Cascade County	Monarch	2014	Culvert	32 ft	451	Good
S 200 over Drainage No. 000000202508090	Richland County	2M NE Lambert	1956	Culvert	34 ft	446	Poor
S 200 over Drainage No. P00051048+09501	Richland County	1M NW Lambert	2008	Culvert	25 ft	446	Fair
US 12 over Drainage No. P00014157+07001	Musselshell County	12M W Roundup	2006	Culvert	27 ft	441	Good
Marsh RD over Cains Coulee No. S00335000+06001	Dawson County	S Glendive	1964	Culvert	35 ft	437	Fair
S 223 over Cottonwood Creek No. S00223046+06001	Liberty County	6M S Chester	1963	Culvert	36 ft	409	Fair
IRR BIA RTE 1 over Big Horn Canal No. 00000000000C227	Big Horn County	16 KM W of Crow Agency	2001	Culvert	30 ft	400	Good
IRR BIA RTE 6 over Box Elder Creek No. 00000000000C915	Hill County	4 KM NW of Rocky Boys	1992	Culvert	21 ft	400	Good
Wyttenhove LN over Bensley Creek 030 No. L09049001+02001	Custer County	4M NE Miles City	2016	Culvert	22 ft	397	Fair
IRR - US 191 over West Alkali Creek No. P00061143+03411	Phillips County	13M SW Malta	2008	Culvert	30 ft	395	Good
IRR - US 191 over Black Coulee No. P00061143+09321	Phillips County	13M SW Malta	2008	Culvert	32 ft	395	Good
S248 over Drainage No. 000000202506486	Daniels County	Four Buttes	2024	Culvert	26 ft	392	Good
S 248 over Drainage No. S00248043+08481	Daniels County	2M W Scobey	2007	Culvert	25 ft	392	Good
Ridge RD over Thompson Creek 032 No. L06005011+06001	Carter County	12M W Alzada	1987	Culvert	28 ft	373	Fair
IRR - S 13 over Chelsea Creek No. P00032015+03221	Roosevelt County	18M NE Wolf Point	1992	Culvert	27 ft	368	Fair
S 80 over Drainage No. P00080013+03161	Chouteau County	11M SE Fort Benton	1995	Culvert	26 ft	363	Good
US 12 over Stockpass-Drainage No. P00014195+06001	Musselshell County	3M NE Musselshell	2003	Culvert	27 ft	360	Good

Counties with the most

Lake County	22
Ravalli County	20
Dawson County	17
Fallon County	17
Big Horn County	16
Roosevelt County	15
Yellowstone County	13
Valley County	11
Lewis and Clark County	11
Pondera County	11

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