FHWA NBI 2024 Inspection record Public-domain dataset

NORTH LAKE DRIVE

Carrying NORTH LAKE DRIVE over LAKE ALHAMBRA

AT EAST 13TH ST, Contra Costa, California

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Poor
24 t Inventory load rating

Bridge Snapshot: NORTH LAKE DRIVE

The NORTH LAKE DRIVE bridge in Contra Costa, California carries NORTH LAKE DRIVE over LAKE ALHAMBRA. It was built in 1961, making it 65 years old today. It was last reconstructed in 1987, extending its service life. The structure is built primarily of concrete continuous and spans 3 sections, stretching 10.1 meters (33 feet) end to end. Daily traffic averages 1,500 vehicles, placing it in the moderately-trafficked tier of California bridges. It is owned and maintained by City/Municipal Highway Agency.

The latest FHWA inspection records show culvert at 4/9. The weakest component sits in poor condition. At least one major component here scores 4 or below, which produces a Poor condition classification under FHWA's current reporting rules. Its NBI inventory load rating is 24.3 metric tons.

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

How NORTH LAKE DRIVE compares

▼ 7.0
Load rating vs California average (31.3 t)
Bottom 19%
Lower load rating than 81% of California bridges
686
Bridges in Contra Costa · 38 in Poor condition
NORTH LAKE DRIVE 24.3 t
California average 31.3 t

Live comparison across California.

Historical Sufficiency Rating

PlainBridge-computed
54.7 / 100 - historical 50–79.9 band
Structural adequacy /55
22.5
Serviceability /30
20.6
Essentiality /15
14.6
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 How the historical reference is calculated.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

Culvert
4/9
Poor (1–4)
Inventory Load Rating
24.3 t
NBI inventory level (metric tons)
Overall Condition
Poor

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

Structural Details

Year Built
1961
Last Reconstructed
1987
Material
Concrete Continuous
Number of Spans
3
Structure Length
10.1 m (33 ft)
Deck Width
11.6 m (38 ft)
Owner
City/Municipal Highway Agency
Avg Daily Traffic
1,500 vehicles/day
Structure Number
28C0424

How to read this record

NORTH LAKE DRIVE 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 NORTH LAKE DRIVE against other structures in Contra Costa 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 NORTH LAKE DRIVE?

NORTH LAKE DRIVE in Contra Costa, California on the FHWA's 0–9 scale.

How often is NORTH LAKE DRIVE inspected?

NORTH LAKE DRIVE'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 1,500 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. NORTH LAKE DRIVE 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 NORTH LAKE DRIVE?

NORTH LAKE DRIVE has an NBI inventory load rating of 24.3 metric tons.

Who is responsible for maintaining NORTH LAKE DRIVE?

NORTH LAKE DRIVE is owned and maintained by City/Municipal Highway Agency.

How old is NORTH LAKE DRIVE and does age affect safety?

NORTH LAKE DRIVE was built in 1961, making it 65 years old and last reconstructed in 1987.

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.