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Every bridge in Gallatin County, Montana

Name: Every bridge in Gallatin County, Montana
Creator: Bridge Report Card
License: https://creativecommons.org/publicdomain/zero/1.0/

212 inventoried bridges, busiest first

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Gallatin County, Montana, has 212 bridges in the 2025 National Bridge Inventory: 43 rated good, 157 fair, and 12 poor (as of August 20, 2026).
This index lists every one of them, busiest first; each links to its own condition record.

Bridge	Built	Vehicles/day	Condition
N Seventh Ave over Int N 7TH Ave-i 90	2014	26,020	Fair
US 191-huffine Ln over Hyalite Creek	1956	25,670	Fair
N 19TH Ave over Int N 19TH Ave	1994	23,992	Fair
I 90 over Walking Path	2011	21,232	Fair
I 90 over Int Airway Blvd	2014	15,554	Fair
I 90 over Int Airway Blvd	2014	15,554	Fair
I 90 over Sep E Valley Center Spur	1966	15,554	Fair
I 90 over Sep Valley Center Spur	1966	15,554	Fair
S 84-norris Rd over Gallatin River	1987	10,845	Fair
E Kagy Blvd over Bozeman Creek	1984	10,757	Fair
I 90 over RR	1971	10,616	Fair
I 90 over Sep L Street	1968	10,616	Fair
I 90 over Sep L Street	1968	10,616	Fair
I 90 over Sep N Rouse Ave-rr	2011	10,616	Fair
I 90 over Sep N Rouse Ave-rr	2010	10,616	Fair
US 191 Fh 42 over Gallatin River	1958	10,221	Fair
I 90 over Int Bear Canyon	1962	9,819	Fair
I 90 over Int Bear Canyon	1962	9,819	Fair
I 90 over Int E Bozeman-p 50	1971	9,819	Fair
I 90 over Int E Bozeman-p 50	1971	9,819	Fair
I 90 over RR	1971	9,819	Fair
I 90 over RR	2006	9,819	Fair
I 90 over RR	2006	9,819	Fair
I 90 over Sep Fort Ellis Road	1971	9,819	Fair
I 90 over Sep Fort Ellis Road	1971	9,819	Fair
I 90 over Darlington Ditch	1963	9,762	Fair
I 90 over Darlington Ditch	1963	9,762	Fair
I 90 over Int Logan	1963	9,762	Fair
I 90 over Int Logan	1963	9,762	Good
I 90 over Madison River Overflow	1963	9,762	Fair
I 90 over Madison River Overflow	1963	9,762	Fair
I 90 over Madison River-rr	1964	9,762	Fair
I 90 over Madison River-rr	1964	9,762	Fair
I 90 over Madison Road	1963	9,762	Fair
I 90 over Madison Road	1963	9,762	Fair
Lone Mountain Trl over Middle Fk W Gallatin 004	1979	9,730	Fair
Lone Mountain Trl over W Fork W Gallatin 001	1972	9,730	Fair
I 90 over Baker Creek	1965	9,726	Good
I 90 over Baker Creek	1965	9,726	Good
I 90 over Camp Creek	1965	9,726	Good
I 90 over Camp Creek	1965	9,726	Good
I 90 over Gallatin River	1965	9,726	Fair
I 90 over Gallatin River	1965	9,726	Fair
I 90 over Manhattan South Rd	1964	9,726	Fair
I 90 over Manhattan South Rd	1964	9,726	Fair
I 90 over Sep Heeb Road	1965	9,726	Fair
I 90 over Sep Heeb Road	1965	9,726	Good
I 90 over Sep Thorpe Road	1965	9,726	Fair
I 90 over Sep Thorpe Road	1965	9,726	Fair
Springhill Rd over Churn Creek	1990	9,107	Fair
Springhill Rd over East Gallatin River	1990	9,107	Fair
US 191 Fh 42 over Gallatin River	1952	8,952	Fair
US 191 Fh 42 over Gallatin River	1950	8,952	Fair
US 191 Fh 42 over Spanish Creek	1931	8,952	Fair
US 191 Fh 42 over Swan Creek	2009	8,952	Fair
US 191 Fh 42 over West Fork Gallatin River	2009	8,952	Fair
N 19TH Ave over Rr-s 205	1994	8,938	Fair
I 90 over Abandoned RR	1969	8,575	Fair
I 90 over Abandoned RR	1969	8,575	Poor
I 90 over Jefferson River	1968	8,575	Good
I 90 over Jefferson River	1968	8,575	Good
I 90 over Jefferson River Overflow	1969	8,575	Fair
I 90 over Jefferson River Overflow	1969	8,575	Fair
P 86-bridger Dr over Bridger Creek	2005	8,443	Fair
P 86-bridger Dr over East Gallatin River	1984	8,443	Fair
I 90 over Int Jackson Creek	1979	8,272	Fair
I 90 over Int Jackson Creek	1979	8,272	Fair
I 90 over Int Trail Creek	1962	8,272	Fair
I 90 over Int Trail Creek	1962	8,272	Fair
E Griffin Dr over E Gallatin River 090	1989	7,375	Fair
E Valley Center Rd over Hyalite Creek	2011	6,192	Fair
N 7TH Ave-frtg Rd over RR - Mrl	1993	6,113	Fair
Lone Mountain Trl over N Fk W Gallatin Riv 005	1982	5,180	Good
Airport Rd over Hyalite Creek	2022	4,997	Good
US 20 over S Fork Madison River	2009	4,666	Fair
US 287 over Madison River	1968	4,098	Fair
Baxter Lane E over Hyalite Creek	2019	3,839	Good
US 191 Fh 45 over Cougar Creek	1964	3,139	Fair
Frontage Rd-s 205 over Gallatin River	1949	3,038	Fair
US 191 Fh 42 over Grayling Creek	2012	2,605	Fair
US 191 Fh 42 over Grayling Creek	1962	2,605	Fair
US 191 Fh 42 over Grayling Creek	1962	2,605	Fair
US 191 Fh 42 over Teepee Creek	1962	2,605	Poor
US 191 over Gallatin River	1955	2,605	Fair
US 191 over Grayling Creek	1962	2,605	Poor
US 191 over Grayling Creek	1962	2,605	Fair
US 191 over Specimen Creek	1955	2,605	Fair
US 191 Fh 42 over Taylor Fork Gallatin R	1959	2,325	Good
US 191 Fh 42 over West Gallatin River	1959	2,325	Fair
Frontage Rd-s 205 over Baker Creek	1921	2,274	Fair
Frontage Rd-s 205 over Camp Creek	1920	2,274	Fair
Frontage Rd-s 205 over RR	2010	2,274	Fair
Bozeman Trail Rd over Bear Creek	2019	2,211	Good
Dry Creek Rd over E Gallatin River Overflo	1957	2,133	Fair
Dry Creek Rd over East Gallatin River	1957	2,133	Fair
Dry Creek Rd over Reese Creek	1957	2,133	Fair
Churchill Rd S 288 over Camp Creek	2024	2,002	Good
Churchill Rd over Int Manhattan-i 90	1964	2,002	Fair
Churchill Rd over Stockpass Darinage	2024	2,002	Good
Amsterdam Rd over Baker Creek	1952	1,889	Fair
Amsterdam Rd over Gallatin River	1951	1,889	Fair
S 19TH Rd over Hyalite Creek	1988	1,856	Fair
L St over E Gallatin River 091	2001	1,761	Fair
S 2 over Jefferson River	1949	1,515	Fair
S 205-frontage Rd over Madison River	1948	1,501	Fair
S 205-frontage Rd over Mid Fork Madison River	1990	1,501	Fair
Logan Trident Rd over Gallatin River 008	1964	1,328	Fair
W Dry Creek Rd over Baker Creek	1967	1,287	Poor
W Dry Creek Rd over Gallatin River	1967	1,287	Fair
US 287 over RR	1950	1,227	Fair
Frontage Rd-s 205 over Drainage	1931	1,162	Fair
Frontage Rd-s 205 over RR	2007	1,162	Fair
US 287 over Grayling Creek	1964	1,132	Fair
US 287 over Beaver Creek	1964	1,010	Fair
US 287 over Cabin Creek	1964	1,010	Fair
Breeze Way Road over Willow Creek 016	2019	1,004	Good
W Dry Creek Rd over East Gallatin River	1967	825	Fair
Penwell Bridge Rd over E Gallatin River 059	1985	571	Fair
Axtell Anceny Rd over Gallatin River 084	1919	569	Poor
Trident Rd over Gallatin River	1975	496	Fair
Brackett CR Rd over Brackett Creek 121	1989	354	Fair
Dry Creek Rd over Dry Creek 119	2009	265	Fair
Dry Creek Rd over Dry Creek	1929	204	Fair
Dry Creek Rd over Dry Creek	2012	204	Good
Moffit Gulch Rd over Rocky Creek 044	1976	149	Fair
Old Yellowstone Tr over Willow Creek	1949	133	Fair
Heeb Rd over Baker Creek 080	1992	104	Fair
16 Mile Creek Rd over Mid Fork 16-mile CR 072	1996	100	Fair
Airport Rd over E Gallatin River 097	2012	100	Good
Amsterdam Rd over Camp Creek 060	1956	100	Fair
Beatty Rd over South Dry Creek	2022	100	Good
Beatty Road over Farmers Canal	2017	100	Good
Biggs Haugland Rd over Dry Creek 079	1985	100	Fair
Blackwood Rd over Hyalite Creek 052	1971	100	Fair
Buttelman Rd over Willow Creek 061	1923	100	Fair
Camp Creek Rd over Camp Creek 017	2002	100	Good
Camp Creek Rd over Camp Creek 018	1986	100	Fair
Canal Rd over Godfrey Creek 083	1988	100	Fair
Chapman Rd over Hyalite Creek 049	2014	100	Fair
Cobb Hill Rd over Hyalite Creek 050	1987	100	Fair
Cottonwood Cnyn Rd over Cottonwood Creek 041	1986	100	Fair
Cottonwood Rd over S Cottonwood Creek 123	2014	100	Fair
Cottonwood Road over S Cottonwood Creek 124	2014	100	Fair
Dry CR School Rd over E Gallatin River 032	1924	100	Fair
E Tamarack Street over Bozeman Creek 115	1982	100	Fair
Gateway S Rd over Gallatin River 019	2001	100	Fair
Gateway S Rd over Gallatin River 020	2001	100	Fair
Goldenstein Ln over Sourdough Creek 053	1982	100	Good
Gooch Hill Road over Hyalite Creek 050	2016	100	Good
Grayling CR Rd over Grayling Creek 111	1977	100	Fair
Hamilton Rd over E Gallatin River 076	1928	100	Fair
Hamilton Rd over Reese Creek	2020	100	Good
Hamilton Road over Smith Creek	2017	100	Good
Ice Pond Rd over Bozeman Creek 122	2010	100	Fair
Johnson Road over Hyalite Creek 125	2014	100	Good
Kelly Canyon Rd over Bridger Creek 047	1983	100	Poor
Kelly Canyon Rd over Rocky Creek 042	2001	100	Fair
Law Rd over S Cottonwood Creek 011	1975	100	Fair
Little Bear Rd over Big Bear Creek 118	1987	100	Fair
Little Bear Rd over W Gallatin Canal 119	2005	100	Fair
Maiden Rock Rd over Bridger Creek 106	1940	100	Poor
Maiden Rock Rd over Bridger Creek 107	1922	100	Poor
Manhattan S Rd over Irrigation Canal 117	1956	100	Fair
Manley Rd over E Gallatin River 089	1996	100	Fair
Monforton Sch Rd over Hyalite Creek 093	2014	100	Good
Monforton Sch Rd over Hyalite Creek 105	1992	100	Fair
Nixon Gulch Road over Gallatin River	2020	100	Good
Old Town Rd over Jefferson River 004	1897	100	Poor
Old Town Rd over Jefferson River 063	1894	100	Poor
Pine Butte Rd over Highline Canal 114	1992	100	Fair
Pine Butte Rd over Highline Canal 116	1987	100	Fair
River Rd over Lowline Canal 056	1933	100	Fair
S 2 over E Three Forks Int I 90	2010	100	Fair
S 85-jackrabbit Ln over Int Belgrade I 90	1998	100	Fair
Sixteen Mile Road over Sixteen Mile Creek 070	1974	100	Fair
Sixteen Mile Road over Sixteen Mile Creek 071	1954	100	Fair
Spain Bridge Rd over E Gallatin River 058	1975	100	Fair
Spaulding Br Rd over E Gallatin River 077	1997	100	Fair
Stagecoach Trl Rd over Baker Creek 082	1959	100	Poor
Stagecoach Trl Rd over Baker Creek Overflow 081	1965	100	Fair
Story Hill Rd over Rocky Creek	2005	100	Fair
Story Mill Rd over Bridger Creek 088	1978	100	Fair
Swamp Rd over E Gallatin River 074	2008	100	Good
W Cameron Br Rd over Gallatin River 048	2007	100	Fair
Wilson Creek Rd over Irrigation Canal	2019	100	Good
Deer Creek Trlhd. over Gallatin River	1970	99	Fair
Durnam Road over Gallatin River	1970	99	Fair
Hyalite Road over Hyalite Creek	1988	99	Good
Porcupine CR Road over Gallatin River	1951	99	Fair
Red Cliff Camp Rd over Gallatin River	1968	99	Good
Storm Castle Road over Gallatin River	1935	99	Fair
Williams Br Rd over Jefferson River 046	1898	87	Fair
Flathead Pass Rd over Flathead Creek	2017	77	Good
Hatchery Facility over Bridger Creek	2002	50	Good
Langohr Road over Hyalite Creek	1952	50	Fair
Line Creek Road over Stormcastle Creek	1948	50	Fair
No Data Entered over No Data Entered	2022	50	Good
Portal Creek Road over Portal Creek	2005	50	Good
Rat Lake Road over Stormcastle Creek	1954	50	Fair
S.rock Creek Road over Rock Creek	1987	50	Fair
Skunk Creek Road over Brackett Creek	1972	50	Fair
Spire Rock Cg Loop over Stormcastle Creek	1957	50	Fair
Spire Rock Cg Loop over Stormcastle Creek	1957	50	Fair
Taylor Fork Road over Wapiti Creek	1954	50	Poor
Bozeman Creek Road over Bozeman Creek	1965	40	Good
Hebgen Lake Road over Watkins Creek	2011	40	Good
Hyalite Rd over East Fork Hyalite Creek	2013	40	Good
Hyalite Road over East Fork Hyalite Creek	2014	40	Good
Mill Creek Road over Anderson Creek	2009	40	Good
Storm Castle Road over French Creek	2014	40	Good
Taylor Fk. Road over Taylor Fk. Creek	1997	40	Good
Storm Castle Road over Sq___ Creek	1954	5	Fair

Source: FHWA National Bridge Inventory, 2025.

Gallatin County bridge conditions · Montana bridges by county.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.