Plumas County Bridge Report Card

Plumas County scores 69 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.

D69 / 100

Local infrastructure snapshot

Plumas County, California

Plumas County has 165 bridges in the National Bridge Inventory, with 5 rated poor and 11 rated scour-critical. Its poor-condition share of 3.0% is at or below the 4.9% statewide average. Poor-condition bridges carry about 10,246 daily vehicle crossings.

165Total Bridges

5Poor (3.0%)

117Fair (70.9%)

11Scour-Critical

Quote-Ready Local Facts

3.0%of county bridges are in poor condition, compared with 4.9% statewide and 6.7% nationally.

10,246daily vehicle crossings are on poor-condition bridges in the county.

11bridges are rated scour-critical, or 6.7% of the county bridge inventory.

Copyable Facts for Reporters

BridgeLookup.com gives Plumas County a Bridge Condition Exposure Score of 69/100 (D). The county has 165 bridges in the National Bridge Inventory, including 5 in poor condition and 11 rated scour-critical. Poor-condition bridges carry about 10,246 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.

Download all county report-card scores as CSV.

How the Score Breaks Down

Factor	Weight	County Value	Penalty
Poor-condition bridge share	40	3.0%	6.1
Poor-condition traffic exposure	25	8.2% of measured traffic	6.2
Scour-critical bridge share	20	6.7%	13.3
Average age vs national baseline	10	60 years vs 48 nationally	5.0
Traffic-data completeness	5	124,880 measured daily crossings	0.0

Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.

County Comparisons

County Poor-Condition Share	3.0%
State Poor-Condition Share	4.9%
National Poor-Condition Share	6.7%
County Scour-Critical Share	6.7%
Average Bridge Age	60 years
Poor-Condition Traffic Exposure	10,246 vehicles/day

Bridges to Watch

Busiest Poor-Condition BridgeGulling Street over Middle Fork Feather Riv — 10,046 vehicles/day Oldest Listed BridgeDyson Lane over Mid Fk Feather Riv Ovrfl — built in 1908 All County BridgesBrowse every bridge record in Plumas County.

Top Bridges to Watch in Plumas County

Bridge	Reason	Condition	Daily Traffic	Year Built
Gulling Street over Middle Fork Feather Riv	Poor condition + traffic exposure	Poor	10,046	1954
Road 24n28 over Slate Creek	Poor condition + traffic exposure	Poor	50	1956
Road 23n37 over Eureka Creek	Poor condition + traffic exposure	Poor	50	1942
Actually RD 28n03 over Indian Creek	Poor condition + traffic exposure	Poor	50	1965
Road 28n03 over Indian Creek	Poor condition + traffic exposure	Poor	50	1965
State Route 70 over Spanish Creek	Scour-critical foundation rating	Fair	6,700	1964
1st Avenue over North Fork Feather River	Scour-critical foundation rating	Fair	960	1947
Keddie Resort Road over Spanish Creek	Scour-critical foundation rating	Fair	140	1914
Bkwth Grnville RD over Hosselkus Creek	Scour-critical foundation rating	Fair	115	1983
Warner Valley RD over Warner Creek	Scour-critical foundation rating	Fair	90	1965

Important safety note

Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.