FHWA NBI 2024 Inspection record Public-domain dataset

6590

Carrying 6590 over NO DATA ENTERED

ZAREMBO ISLAND, Wrangell City and, Alaska

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
24 t Inventory load rating

Bridge Snapshot: 6590

The 6590 bridge in Wrangell City and, Alaska carries 6590 over NO DATA ENTERED. It was built in 1983, making it 43 years old today. It was last reconstructed in 2016, extending its service life. The structure is built primarily of steel and spans 1 section, stretching 15.2 meters (50 feet) end to end. Average daily traffic is not reported for this structure. It is owned and maintained by U.S. Forest Service.

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. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 23.7 metric tons.

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

How 6590 compares

▼ 11.1
Load rating vs Alaska average (34.8 t)
Bottom 28%
Lower load rating than 72% of Alaska bridges
55
Bridges in Wrangell City and · 4 in Poor condition
6590 23.7 t
Alaska average 34.8 t

Live comparison across Alaska.

Historical Sufficiency Rating

PlainBridge-computed
82.7 / 100 - historical 80–100 band
Structural adequacy /55
46.6
Serviceability /30
26.0
Essentiality /15
15.0
Special reductions
−4.9

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 How the historical reference is calculated.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
23.7 t
NBI inventory level (metric tons)
Overall Condition
Good

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

Structural Details

Year Built
1983
Last Reconstructed
2016
Material
Steel
Number of Spans
1
Structure Length
15.2 m (50 ft)
Deck Width
7.9 m (26 ft)
Owner
U.S. Forest Service
Structure Number
100510000001149

Condition Analysis

  • The deck (driving surface) rates good at 7/9, with no significant deterioration on file.
  • The superstructure (beams and supports above the deck) is in good condition (7/9), showing no significant deterioration.
  • The substructure (piers and abutments) rates good at 7/9, with no significant deterioration on file.

How to read this record

This page shows what the last federal inspection recorded, not whether 6590 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 6590 against other structures in Wrangell City and and across Alaska. Alaska 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 6590?

6590 in Wrangell City and, Alaska 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 6590 inspected?

6590's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval.

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

FHWA retired that reported status beginning with the 2018 archive. 6590 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 6590?

6590 has an NBI inventory load rating of 23.7 metric tons.

Who is responsible for maintaining 6590?

6590 is owned and maintained by U.S. Forest Service.

How old is 6590 and does age affect safety?

6590 was built in 1983, making it 43 years old and last reconstructed in 2016.

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.