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Every bridge in Mason County, Washington

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

136 inventoried bridges, busiest first

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

Mason County, Washington, has 136 bridges in the 2025 National Bridge Inventory: 77 rated good, 55 fair, and 4 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
US 101 over Mill Creek	1973	19,397	Good
US 101 over Creek/rr/street	1973	18,182	Fair
US 101 over Matlock Rd	1973	18,182	Poor
SR 3 over Goldsborough Creek	1923	17,285	Fair
US 101 over SR 3	1972	17,050	Fair
SR 3 over Deer Creek	1957	15,878	Good
SR 3 over Cranberry Creek	1957	15,815	Fair
SR 3 over Johns Creek	1948	15,751	Fair
SR 3 over Mill Creek	1921	15,354	Fair
US 101 over Kennedy Creek	1960	13,297	Fair
US 101 over Kennedy Creek	1960	13,297	Fair
US 101 over Skookum CR Np Ry	1962	12,942	Fair
US 101 over Skookum CR Np Ry	1962	12,942	Fair
SR 300 over Union River	1960	12,136	Fair
SR 108 over Little Skookum Creek	2016	11,722	Good
US 101 over SR 108	1986	11,184	Good
SR 3 over Sherwood Creek	1952	10,739	Fair
Shelton Matlock Rd over Goldsborough Creek	1977	8,200	Good
US 101 over Purdy Creek	2009	7,648	Good
US 101 over Skokomish River	1932	7,648	Fair
US 101 over Slough	1985	7,648	Good
US 101 over Weaver Creek	1970	7,648	Good
SR 300 over Mission Creek	1963	7,374	Fair
SR 101 over Cushman Tailrace	1930	7,356	Fair
W. Kneeland Blvd over US 101	1993	6,636	Good
7TH Avenue over Goldsbrough Creek	1976	6,000	Good
US 101 over Finch Creek	1925	4,585	Good
SR 302 over Coulter CR	1956	4,313	Fair
Arcadia Road over Bur. Nor. Railroad	1978	4,134	Good
SR 108 over Skookum Creek	1952	3,948	Fair
US 101 over Sund Creek	1925	3,766	Fair
SR 108 over Skookum Creek	1952	3,581	Fair
SR 108 over Unt to Skookum Creek	2024	3,581	Good
Old Belfair Highwa over Union River	1987	3,517	Good
US 101 over Lilliwaup R	1925	3,173	Fair
US 101 over Eagle CR	1950	3,065	Good
Agate Rd over Campbell Creek	1993	3,036	Good
US 101 over Jorsted Creek	1985	2,997	Fair
US 101 over Hamma Hamma River	1924	2,911	Fair
US 101 over Hamma Hamma River	1924	2,911	Good
US 101 over Waketickeh Creek	1982	2,639	Fair
Belfair Tahuya Rd over Tahuya River	2009	2,558	Good
SR 106 over Alderbrook Ped Path	2007	2,353	Good
SR 106 over Twanoh Creek	2023	2,353	Good
SR 106 over Twanoh Falls Creek	2014	2,353	Good
Harstine Bridge Rd over Pickering Passage	1969	2,155	Fair
Shelton Matlock Rd over Goldsborough Creek	1956	2,079	Good
Mason Lake Rd. over Cranberry Creek	1993	1,783	Good
Shelton Matlock Rd over No. Fork Goldsborough Ck	1988	1,777	Fair
SR 106 over Skobob Creek	2005	1,614	Good
SR 106 over Skokomish River	1987	1,614	Good
Shelton Matlock Rd over Bingham Creek	1960	1,437	Good
C St over US 101	1973	1,270	Good
W Cloquallum Rd over US 101	1972	1,207	Fair
US 101 S-n Ramp over Wetland	2008	1,187	Good
N. Shore Road over Tahuya River	2024	1,050	Good
Trails Road over Sherwood Creek	1995	1,050	Good
Shelton-matlock Rd over Coffee Creek	2020	1,000	Good
Steelhead Drive So over Mission Creek	1990	950	Fair
Arcadia Rd. over Mill Creek	1971	879	Good
Grapeview Loop Rd over Mclane Cove	2008	835	Good
Mission Creek Rd over Mission Creek	1991	827	Good
Mission Creek Road over Big Mission Creek	1968	671	Fair
Cloquallum Road over Cloquallum Creek	1994	627	Good
Cloquallum Road over Cloquallum Creek	1996	627	Good
Cloquallum Road over Cloquallum Creek	1996	627	Good
Co. Rd. 90100 over Decker Creek	1996	588	Fair
North Shore Rd over Rendsland Creek	1950	526	Fair
Irr Bia Rte 8 over Skobob Creek	1998	525	Good
SR 119 over Big Creek	1960	519	Fair
North Shore Rd over Tahuya Estuary	1961	513	Fair
North Shore Road over Great Bend Creek	2022	513	Good
Skok. River Rd over Weaver Creek	2012	494	Good
Skokomish Valley R over Vance Creek	1959	494	Good
Skokomish ValleyRD over Hunter Creek	2015	494	Good
Skokomish ValleyRd over Vance Creek	1963	494	Good
E. Mason Lake Rd W over Schumocher Creek	2002	490	Good
Eckert Road over Case Inlet	1920	385	Fair
Schaffer Park Rd over East Fork Satsop River	1993	376	Good
Schaffer St Prk Rd over Decker Creek	1967	376	Good
Agate Loop Rd over Campbell Creek	1950	257	Poor
Dewatto Holly rd over Dewatto River	1967	200	Fair
Little Egypt Rd over So. Fk. Goldsborough Ck.	1966	191	Good
Little Egypt Rd. over No. Fk. Goldsborough Ck.	1958	191	Fair
Deegan Road West over Coffee Creek	2020	187	Good
Finch Creek Rd over Finch Creek	2009	184	Good
Deckerville Road over Decker Creek	1949	149	Fair
Deckerville Road over Dry Bed Creek	1963	149	Good
Mary M Knight Rd over Dry Creek	1970	148	Fair
SatsopCloquallumRD over Comfort Creek	2000	132	Good
Park Entrance over Twanoh Creek	2000	125	Fair
Skokomish Valley R over Vance Creek	1986	110	Good
Sunnyside Road over unnamed channel	2023	100	Good
Beeville Loop Rd over Dry Bed Creek	1954	86	Fair
Bear CR - Dewatto over Dewatto River	2008	79	Good
No Data Entered over Brown Creek	1969	75	Good
No Data Entered over Cabin Creek	1993	75	Good
No Data Entered over Waketickeh Creek	2000	75	Good
Bourgault Rd over Weaver Creek	1966	73	Fair
Old Oly. Highway over Skookum Creek	2006	72	Good
Old Olympic Highwa over Kennedy Creek	1917	72	Fair
Elfendahl Pass Rd over Stimson Creek	2013	65	Good
W. Bulb Farm Rd. over Cloquallum Creek	1961	62	Poor
23610 over Cedar Creek	1959	50	Fair
Homer Adams Road over Deckerville Creek	2021	50	Good
No Data Entered over Canyon River	1951	50	Fair
No Data Entered over Church Creek	1965	50	Fair
No Data Entered over Jefferson Creek	1957	50	Fair
No Data Entered over Mid Fork Satsop River	1967	50	Good
No Data Entered over N Fk Skokomish River	1929	50	Fair
No Data Entered over Quitter Creek	1959	50	Good
No Data Entered over Rock Ck.	1975	50	Fair
No Data Entered over S Fk Skokomish River	1963	50	Fair
No Data Entered over Snow Creek	2010	50	Fair
No Data Entered over Trib. to Canyon River	2004	50	Fair
Plug Mill Road over Dry Run Creek	1994	37	Good
Bolling Road over Gosnell Creek	2003	36	Good
Beeville Loop over Rabbit Creek	2010	32	Good
No Data Entered over Hamma Hamma River	1950	30	Fair
No Data Entered over Boulder Creek	1965	25	Fair
No Data Entered over Hamma Hamma River	1968	25	Good
No Data Entered over Lebar Creek	1974	25	Good
No Data Entered over Lena Creek	1964	25	Poor
No Data Entered over Pine Creek	1959	25	Fair
No Data Entered over Walter Creek	1967	25	Good
Eich Road over Little Skookum Creek	2004	22	Good
Eich Road over Skookum Creek	1968	22	Fair
Beeville Road over Dry Bed Creek	1984	16	Good
No Data Entered over Baker Creek	1964	15	Good
No Data Entered over Upper Canyon River	1955	15	Good
No Data Entered over Jefferson Creek	1975	10	Good
No Data Entered over Jefferson Creek	1986	10	Good
No Data Entered over Washington Creek	1965	10	Fair
Vance CR Loop over Fir Creek	2010	10	Good
No Data Entered over Lake Cushman (N Fk Skok)	1959	5	Good
No Data Entered over Lake Cushman (N Fk Skok)	2011	5	Good

Source: FHWA National Bridge Inventory, 2025.

Mason County bridge conditions · Washington bridges by county.

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