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Every bridge in Sheridan County, Montana

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

66 inventoried bridges, busiest first

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

Sheridan County, Montana, has 66 bridges in the 2025 National Bridge Inventory: 11 rated good, 52 fair, and 3 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
S 16 over Ator Creek	1984	1,559	Fair
S 5 over Marron Creek	1983	1,559	Fair
S 5 over Antelope Creek	1986	1,120	Good
S 16 over Medicine Lake	1975	891	Fair
S 5 over Mccoy Creek	2001	589	Good
S 5 over Plentywood Creek	2001	589	Good
S 5 over Big Muddy Creek	2012	511	Fair
S 5 over Redstone Creek	2011	511	Good
S 5 over Eagle Creek	2011	323	Fair
S 5 over Dahl Creek	1939	309	Poor
S 5 over Dry Creek	1939	309	Fair
S 5 over Main Creek	1939	309	Poor
W Lake Rd over Muddy CR Diversion 045	1970	198	Fair
Mann Rd over Big Muddy Creek	1967	163	Fair
S 374-outlook Hwy over Drainage	1955	152	Fair
W Reserve Hwy over Big Muddy Creek	1949	151	Fair
W Reserve Hwy over Big Muddy Creek Overflow	1949	151	Fair
Shippe Canyon Rd over Big Muddy Creek 032	1970	117	Fair
Shippe Canyon Rd over Otter Creek 037	1987	117	Fair
E Lake Hwy over Lake Creek 060	1965	109	Fair
Beaver Creek Rd over Beaver Creek 008	1993	100	Good
Cherry Creek Rd over Drainage 052	1970	100	Fair
Daleview Hills Rd over Big Muddy Creek 005	1983	100	Fair
Daleview Rd over Big Muddy Creek 019	1992	100	Fair
Dutch Henry Rd over Beaver Creek 006	1982	100	Fair
Dutch Henry Rd over Beaver Creek 072	1983	100	Fair
Dutch Henry Rd over Beaver Creek 073	1983	100	Fair
E Antelope Rd over Antelope Creek 036	1987	100	Fair
E Redstone Rd over Big Muddy Creek 021	1960	100	Fair
Hendrickson Hill R over Mccoy Creek 001	1994	100	Fair
Lake Creek Rd over Lake Creek 078	1983	100	Good
Longfellow Rd over Lake Creek 074	1987	100	Fair
Lost Creek Rd over Lost Creek 050	1991	100	Good
Marron Creek Rd over Drainage 051	1979	100	Fair
Nine Mile Rd over Harry`s Creek 011	1995	100	Fair
Outlook Bench Rd over Plentywood Creek 014	1970	100	Fair
Rose Hill Rd over Neiser Creek 012	1950	100	Fair
S Dagmar Rd over Cottonwood Creek 059	1970	100	Fair
S Dagmar Rd over Lake Creek 058	1978	100	Fair
Sandhills Rd over Sand Creek 057	1988	100	Good
Soo Line Rd over Harry`s Creek 071	1985	100	Fair
Soo Line Rd over Plentywood Creek 003	1970	100	Fair
Twin Bridges Rd over Antelope Creek 055	2008	100	Fair
W Reserve Rd over Wolf Creek 039	1976	100	Fair
Whittish Hill Rd over Big Muddy Creek 035	1989	100	Fair
County Road 468 over Diversion Canal 079	2004	79	Good
W Lake Rd over Big Muddy Creek 046	1950	79	Poor
W Lake Rd over Wolf Creek 047	1977	79	Fair
Whiskey Rd over Big Muddy Creek 043	1978	71	Fair
Whiskey Rd over Drainage 044	1981	71	Fair
S Redstone Rd over Wolf Creek 040	1950	64	Fair
S Archer Rd over Big Muddy Creek 015	1985	46	Fair
W Reserve Rd over Otter Creek 038	1970	42	Fair
Bolster Rd over Big Muddy Creek 029	1970	30	Fair
Bolster Rd over Wolf Creek 028	1987	30	Fair
Irr - S 350 over Big Muddy Creek	1957	28	Fair
Bergh Rd over Wolf Creek 041	1977	27	Fair
Chalk Butte Rd over Plentywood Creek 009	1970	26	Fair
Midby Rd over Big Muddy Creek 024	1987	22	Good
Midby Rd over Ford Creek 025	1984	22	Fair
Comertown Rd over Drainage 053	1989	19	Fair
S Archer Rd over Big Muddy Creek 016	2004	17	Good
Old Muddy Rd over Big Muddy Creek 033	1987	13	Fair
Singletree Rd over Big Muddy Creek 034	1984	13	Fair
Three Corners Rd over Wolf Creek 061	1970	13	Fair
Daleview Rd over Big Muddy Creek 020	1982	8	Fair

Source: FHWA National Bridge Inventory, 2025.

Sheridan County bridge conditions · Montana bridges by county.

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