US Bridges

Old HWY 99 North over Friday Creek

FairPosted for load

Skagit County, Washington · 4.3 N JCT Cook Rd. · Structure no. 084255000000000

Built
1956
69 years old
Condition
Fair
inspected May 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
122 ft
3 main spans
Daily traffic
2,682
2021 count
Owner
County
County Highway Agency

About this bridge

Old HWY 99 North over Friday Creek is a concrete continuous box beam or girders - multiple carrying Old HWY 99 North over Friday Creek in Skagit County, Washington. It was built in 1956, so it is 69 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 2,682 vehicles a day, roughly 8% of them trucks, projected to reach 4,844 by 2041. The structure is 122 ft (37.2 m) long and 30 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

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CarriesOld HWY 99 North
CrossesFriday Creek
Location4.3 N JCT Cook Rd.
RouteCounty Highway 50510
CountySkagit County
StateWashington
Coordinates48.56692, -122.33458
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating47 US tons
Inventory rating28 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length122 ft (37.2 m)
Longest span50 ft (15.2 m)
Deck width30 ft (9.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,682 (2021)
Projected traffic4,844 by 2041
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Old HWY 99 North over Friday Creek built?

It was built in 1956, making it 69 years old in 2025.

What condition is Old HWY 99 North over Friday Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.

How much traffic does Old HWY 99 North over Friday Creek carry?

About 2,682 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Old HWY 99 North over Friday Creek?

The structure is 122 ft (37.2 m) long with a longest span of 50 ft (15.2 m) and a deck 30 ft wide.

Who owns Old HWY 99 North over Friday Creek?

It is owned by the County Highway Agency.