FHWA NBI 2024 Inspection record Public-domain dataset

LARKMEAD LANE

Carrying LARKMEAD LANE over NAPA RIVER

0.6 MI N OF S.R. 29, Napa, California

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
23 t Inventory load rating

Bridge Snapshot: LARKMEAD LANE

The LARKMEAD LANE bridge in Napa, California carries LARKMEAD LANE over NAPA RIVER. It was built in 1926, making it 100 years old today. The structure is built primarily of concrete and spans 2 sections, stretching 25.9 meters (85 feet) end to end. Daily traffic averages 484 vehicles, placing it in the lower-traffic tier of California bridges. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show a deck rating of 7/9, superstructure at 7/9, substructure at 7/9. The weakest component sits in good condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 23.0 metric tons.

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

How LARKMEAD LANE compares

▼ 8.3
Load rating vs California average (31.3 t)
Bottom 17%
Lower load rating than 83% of California bridges
160
Bridges in Napa · 7 in Poor condition
LARKMEAD LANE 23.0 t
California average 31.3 t

Live comparison across California.

Historical Sufficiency Rating

PlainBridge-computed
68.3 / 100 - historical 50–79.9 band
Structural adequacy /55
45.6
Serviceability /30
11.0
Essentiality /15
14.7
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 How the historical reference is calculated.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
7/9
Good (7–9)
Superstructure
7/9
Good (7–9)
Substructure
7/9
Good (7–9)
Inventory Load Rating
23.0 t
NBI inventory level (metric tons)
Overall Condition
Good

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

Structural Details

Year Built
1926
Material
Concrete
Number of Spans
2
Structure Length
25.9 m (85 ft)
Deck Width
6.9 m (23 ft)
Owner
County Highway Agency
Avg Daily Traffic
484 vehicles/day
Structure Number
21C0061

Condition Analysis

  • The deck (driving surface) rates good at 7/9, with no significant deterioration on file.
  • At 7/9, the superstructure (beams and supports above the deck) is in good shape and shows no significant wear.
  • 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 LARKMEAD LANE 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 LARKMEAD LANE against other structures in Napa 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 LARKMEAD LANE?

LARKMEAD LANE in Napa, California has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.

How often is LARKMEAD LANE inspected?

LARKMEAD LANE'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 484 vehicles per day.

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

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

What is the inventory load rating for LARKMEAD LANE?

LARKMEAD LANE has an NBI inventory load rating of 23.0 metric tons.

Who is responsible for maintaining LARKMEAD LANE?

LARKMEAD LANE is owned and maintained by County Highway Agency.

How old is LARKMEAD LANE and does age affect safety?

LARKMEAD LANE was built in 1926, making it 100 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.