S COW MTN -8 MILE
Carrying S COW MTN -8 MILE over Panther Creek
11.4 miles SE of Ukiah, Lake, California
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
S COW MTN -8 MILE in Lake, California sits above 1% of rated California bridges on inventory load rating (7 t), while its 2000 build year is earlier than 12% of Lake's recorded-year cohort (129 bridges).
S COW MTN -8 MILE in Lake, California is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 2000, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 4. The lowest applicable rating sets the federal condition category, so this Poor result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure CA:0000000L1835958
POST-2000 · STEEL · SINGLE-SPAN · DECK-LED · TRACE-ADT · LIGHT-LOAD · CAT-POOR
- POST-2000 2000+
- STEEL Steel
- SINGLE-SPAN Single span
- DECK-LED Deck-led
- TRACE-ADT Trace ADT
- LIGHT-LOAD Light load
- CAT-POOR Poor
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: S COW MTN -8 MILE
The S COW MTN -8 MILE bridge in Lake, California carries S COW MTN -8 MILE over Panther Creek. It was built in 2000, making it 26 years old today. It was last reconstructed in 2021, extending its service life. The structure is built primarily of steel and spans 1 section, stretching 13.6 meters (45 feet) end to end. Daily traffic averages 25 vehicles, placing it in the lower-traffic tier of California bridges. It is owned and maintained by Bureau of Land Management.
The latest FHWA inspection records show a deck rating of 4/9, superstructure at 6/9, substructure at 5/9. The weakest component sits in poor condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order.
How S COW MTN -8 MILE compares
Age against the county: built in 2000, earlier than 16 of Lake's 129 bridges with a recorded construction year (12%), against a county median build year of 1966. This is one of the newer structures in its county.
Live comparison across California bridges with a recorded inventory load rating (25,538 of 25,848 rated).
S COW MTN -8 MILE vs every rated California bridge
Inventory load rating (metric tons), FHWA NBI, this state
7 Top 99% higher than 1% of 25,538 bridges
rated California bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Lake inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 129 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 2000
- Last Reconstructed
- 2021
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 13.6 m (45 ft)
- Deck Width
- 3.0 m (10 ft)
- Owner
- Bureau of Land Management
- Avg Daily Traffic
- 25 vehicles/day
- Structure Number
- 0000000L1835958
Condition Analysis
- • At 4/9, the deck (driving surface) is in poor shape, with advanced wear on file for this vintage.
- • The superstructure (beams and supports above the deck) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
- • At 5/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
S COW MTN -8 MILE is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare S COW MTN -8 MILE against other structures in Lake and across California. California bridges
- Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge
Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.
Frequently Asked Questions
What do the condition ratings mean for S COW MTN -8 MILE?
S COW MTN -8 MILE in Lake, California has a deck rating of 4/9, superstructure rating of 6/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is S COW MTN -8 MILE inspected?
S COW MTN -8 MILE's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 25 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. S COW MTN -8 MILE is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for S COW MTN -8 MILE?
S COW MTN -8 MILE has an NBI inventory load rating of 6.5 metric tons.
Who is responsible for maintaining S COW MTN -8 MILE?
S COW MTN -8 MILE is owned and maintained by Bureau of Land Management.
How old is S COW MTN -8 MILE and does age affect safety?
S COW MTN -8 MILE was built in 2000, making it 26 years old and last reconstructed in 2021.
Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A Poor condition rating is not a live declaration that a bridge is closed or unsafe for travel. For current closure, posting, or safety information, contact the responsible transportation agency.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.