FHWA NBI 2024 Inspection record Public-domain dataset

TABLE MOUNTAIN BLV

Carrying TABLE MOUNTAIN BLV over THERMALITO POWER CANAL

0.8 MI NW NELSON AVE, Butte, California

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
59 t Inventory load rating

Bridge Snapshot: TABLE MOUNTAIN BLV

The TABLE MOUNTAIN BLV bridge in Butte, California carries TABLE MOUNTAIN BLV over THERMALITO POWER CANAL. It was built in 1965, making it 61 years old today. The structure is built primarily of concrete continuous and spans 3 sections, stretching 82.3 meters (270 feet) end to end. Daily traffic averages 3,312 vehicles, placing it in the moderately-trafficked tier of California bridges. It is owned and maintained by Other State Agencies.

The latest FHWA inspection records show a deck rating of 5/9, superstructure at 7/9, substructure at 7/9. The weakest component sits in fair condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 58.6 metric tons.

Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.

How TABLE MOUNTAIN BLV compares

▲ 27.3
Load rating vs California average (31.3 t)
Top 3%
Higher load rating than 97% of California bridges
441
Bridges in Butte · 26 in Poor condition
TABLE MOUNTAIN BLV 58.6 t
California average 31.3 t

Live comparison across California.

Historical Sufficiency Rating

PlainBridge-computed
78.0 / 100 - historical 50–79.9 band
Structural adequacy /55
55.0
Serviceability /30
12.0
Essentiality /15
14.0
Special reductions
−3.0

FHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.

Condition Ratings

Deck
5/9
Fair (5–6)
Superstructure
7/9
Good (7–9)
Substructure
7/9
Good (7–9)
Inventory Load Rating
58.6 t
NBI inventory level (metric tons)
Overall Condition
Fair

Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.

Structural Details

Year Built
1965
Material
Concrete Continuous
Number of Spans
3
Structure Length
82.3 m (270 ft)
Deck Width
11.2 m (37 ft)
Owner
Other State Agencies
Avg Daily Traffic
3,312 vehicles/day
Structure Number
12C0228

Condition Analysis

  • At 5/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
  • The superstructure (beams and supports above the deck) rates good at 7/9, with no significant deterioration on file.
  • At 7/9, the substructure (piers and abutments) is in good shape and shows no significant wear.

How to read this record

This page shows what the last federal inspection recorded, not whether TABLE MOUNTAIN BLV is safe to cross today. Here is how to use it.

  • NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
  • Learn how the 0–9 condition scale and Good/Fair/Poor categories are defined. How condition ratings work
  • Compare TABLE MOUNTAIN BLV against other structures in Butte 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 TABLE MOUNTAIN BLV?

TABLE MOUNTAIN BLV in Butte, California has a deck rating of 5/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.

How often is TABLE MOUNTAIN BLV inspected?

TABLE MOUNTAIN BLV'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 3,312 vehicles per day.

What does “structurally deficient” mean in older bridge reports?

FHWA retired that reported status beginning with the 2018 archive. TABLE MOUNTAIN BLV is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.

What is the inventory load rating for TABLE MOUNTAIN BLV?

TABLE MOUNTAIN BLV has an NBI inventory load rating of 58.6 metric tons.

Who is responsible for maintaining TABLE MOUNTAIN BLV?

TABLE MOUNTAIN BLV is owned and maintained by Other State Agencies.

How old is TABLE MOUNTAIN BLV and does age affect safety?

TABLE MOUNTAIN BLV was built in 1965, making it 61 years old.

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.

Data sourced from the Federal Highway Administration National Bridge Inventory. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.