Structure 88640000000000 · Whatcom County, WA

Alaska Ferry over Belligham Bay

Carries Alaska Ferry over Belligham Bay, .01 N. Harris AVE.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT149 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

149 ft end to end: about 2 semi-trucks nose to tail. 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 girder bridge.

Built198937 years old
Length149.0 ft45.4 m
Daily traffic10counted 2019
Last inspectedJanuary 2023every 24 months

Location

StateWashington
CountyWhatcom
Location.01 N. Harris AVE
CarriesAlaska Ferry
CrossesBelligham Bay
Coordinates48.72187, -122.51221

Physical Characteristics

MaterialSteel
DesignGirder and Floorbeam
Total Length149.0 ft (45.4 m)
Max Span129.9 ft (39.6 m)
Deck Width24.9 ft (7.6 m)
Deck Area345.0 sq m
Main Spans1
Year Built1989

Traffic

Avg Daily Traffic10 (2019)
Truck Traffic1%
Lanes On Bridge1

Inspection & Ownership

Last InspectionJanuary 2023
Inspection FrequencyEvery 24 months
OwnerLocal Toll Authority
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number088640000000000

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.

Nearby Bridges