Structure 10694C0000000 · Clark County, WA

39th ST over I-5

Carries 39th ST over I-5, 0.1 N Jct SR 500.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT282 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

282 ft end to end, longest span 85 ft: about 4 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 box-beam bridge.

Built198046 years old
Length282.2 ft86 m
Daily traffic14,876counted 2012
Last inspectedSeptember 2023every 24 months

Location

StateWashington
CountyClark
Location0.1 N Jct SR 500
Carries39th ST
CrossesI-5
Coordinates45.64983, -122.66242

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length282.2 ft (86 m)
Max Span85.0 ft (25.9 m)
Deck Width57.4 ft (17.5 m)
Deck Area1,505 sq m
Main Spans3
Year Built1980

Traffic

Avg Daily Traffic14,876 (2012)
Truck Traffic2%
Lanes On Bridge3
Lanes Under Bridge7

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number0010694C0000000

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