8000000-21.711
Carrying 8000000-21.711 over MOD
MARGARET, Ketchikan Gateway, Alaska
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
8000000-21.711 in Ketchikan Gateway, Alaska sits above 14% of rated Alaska bridges on inventory load rating (20 t), while its 1992 build year is earlier than 53% of Ketchikan Gateway's recorded-year cohort (100 bridges).
8000000-21.711 in Ketchikan Gateway, Alaska is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1992, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 6. The lowest applicable rating sets the federal condition category, so this Fair 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 AK:100520000001121
LATE-CENTURY · STEEL · SINGLE-SPAN · SUPER-LED · ADT-UNK · STANDARD-LOAD · CAT-FAIR
- LATE-CENTURY 1980–1999
- STEEL Steel
- SINGLE-SPAN Single span
- SUPER-LED Superstructure-led
- ADT-UNK ADT unknown
- STANDARD-LOAD Standard load
- CAT-FAIR Fair
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: 8000000-21.711
The 8000000-21.711 bridge in Ketchikan Gateway, Alaska carries 8000000-21.711 over MOD. It was built in 1992, making it 34 years old today. The structure is built primarily of steel and spans 1 section, stretching 24.4 meters (80 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 6/9, 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.
How 8000000-21.711 compares
Age against the county: built in 1992, earlier than 53 of Ketchikan Gateway's 100 bridges with a recorded construction year (53%), against a county median build year of 1995. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Alaska bridges with a recorded inventory load rating (1,679 of 1,685 rated).
8000000-21.711 vs every rated Alaska bridge
Inventory load rating (metric tons), FHWA NBI, this state
20 Top 86% higher than 14% of 1,679 bridges
rated Alaska 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.
Ketchikan Gateway inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 100 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
- 1992
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 24.4 m (80 ft)
- Deck Width
- 5.5 m (18 ft)
- Owner
- U.S. Forest Service
- Structure Number
- 100520000001121
Condition Analysis
- • The deck (driving surface) rates good at 7/9, with no significant deterioration on file.
- • At 6/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
- • At 7/9, the substructure (piers and abutments) is in good shape and shows no significant wear.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
This page shows what the last federal inspection recorded, not whether 8000000-21.711 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 8000000-21.711 against other structures in Ketchikan Gateway 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 8000000-21.711?
8000000-21.711 in Ketchikan Gateway, Alaska has a deck rating of 7/9, superstructure rating of 6/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is 8000000-21.711 inspected?
8000000-21.711'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. 8000000-21.711 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 8000000-21.711?
8000000-21.711 has an NBI inventory load rating of 20.1 metric tons.
Who is responsible for maintaining 8000000-21.711?
8000000-21.711 is owned and maintained by U.S. Forest Service.
How old is 8000000-21.711 and does age affect safety?
8000000-21.711 was built in 1992, making it 34 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.
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.