Structure 206 · County 063 County, AK

Copper River HWY over Million Dollar Bridge

Carries Copper River HWY over Million Dollar Bridge, Mile Point 48.8.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck7/9 · Good
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,567 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9Substructure 4/9 · sets the rating

1,567 ft end to end, longest span 450 ft: about 4.4 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a through truss.

Built1910rebuilt 2005
Length1566.6 ft477.5 m
Daily traffic65counted 2011
Last inspectedSeptember 2024every 24 months

Location

StateAlaska
CountyCounty 063
LocationMile Point 48.8
CarriesCopper River HWY
CrossesMillion Dollar Bridge
Coordinates60.67307, -144.74587

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length1566.6 ft (477.5 m)
Max Span450.1 ft (137.2 m)
Deck Width20.0 ft (6.1 m)
Deck Area2912.8 sq m
Main Spans4
Year Built1910 (reconstructed 2005)

Traffic

Avg Daily Traffic65 (2011)
Truck Traffic1%
Lanes On Bridge1

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is on the National Register of Historic Places
Scour Critical3 — Scour critical
Structure Number0206

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.