DALTON HIGHWAY
Carrying DALTON HIGHWAY over SPIKE CAMP CREEK SOUTH
MILE POINT 249.6, North Slope, Alaska
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
DALTON HIGHWAY in North Slope, Alaska sits above 97% of rated Alaska bridges on inventory load rating (100 t), while its 1995 build year is earlier than 44% of North Slope's recorded-year cohort (16 bridges).
DALTON HIGHWAY in North Slope, Alaska is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1995, it carries 1 rated component on the inspecting agency's 0-9 scale, and its weakest reported component scores 7. The lowest applicable rating sets the federal condition category, so this Good 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:4042
LATE-CENTURY · STEEL · MULTI-SPAN · CULVERT-LED · LOCAL-ADT · HEAVY-LOAD · CAT-GOOD
- LATE-CENTURY 1980–1999
- STEEL Steel
- MULTI-SPAN 2 spans
- CULVERT-LED Culvert-led
- LOCAL-ADT Local ADT
- HEAVY-LOAD Heavy load
- CAT-GOOD Good
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: DALTON HIGHWAY
The DALTON HIGHWAY bridge in North Slope, Alaska carries DALTON HIGHWAY over SPIKE CAMP CREEK SOUTH. It was built in 1995, making it 31 years old today. The structure is built primarily of steel and spans 2 sections, stretching 7.0 meters (23 feet) end to end. Daily traffic averages 110 vehicles, placing it in the lower-traffic tier of Alaska bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show culvert at 7/9. The weakest component sits in good condition. None of this bridge's reported major components fall into the Poor condition range.
How DALTON HIGHWAY compares
Age against the county: built in 1995, earlier than 7 of North Slope's 16 bridges with a recorded construction year (44%), against a county median build year of 1995.
Live comparison across Alaska bridges with a recorded inventory load rating (1,679 of 1,685 rated).
DALTON HIGHWAY vs every rated Alaska bridge
Inventory load rating (metric tons), FHWA NBI, this state
100 Top 3% higher than 97% 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.
North Slope inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 16 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
- 1995
- Material
- Steel
- Number of Spans
- 2
- Structure Length
- 7.0 m (23 ft) 0
- Owner
- State Highway Agency
- Avg Daily Traffic
- 110 vehicles/day
- Structure Number
- 4042
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 DALTON HIGHWAY 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 DALTON HIGHWAY against other structures in North Slope 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 DALTON HIGHWAY?
DALTON HIGHWAY in North Slope, Alaska on the FHWA's 0–9 scale.
How often is DALTON HIGHWAY inspected?
DALTON HIGHWAY'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 110 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. DALTON HIGHWAY 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 DALTON HIGHWAY?
DALTON HIGHWAY has an NBI inventory load rating of 99.9 metric tons.
Who is responsible for maintaining DALTON HIGHWAY?
DALTON HIGHWAY is owned and maintained by State Highway Agency.
How old is DALTON HIGHWAY and does age affect safety?
DALTON HIGHWAY was built in 1995, making it 31 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.