US Bridges

South Skagit HWY over Pressentin Creek

Fair

Skagit County, Washington · 18.5 E JCT SR9 · Structure no. 081655000000000

Built
1966
59 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
85 ft
3 main spans
Daily traffic
635
2021 count
Owner
County
County Highway Agency

About this bridge

South Skagit HWY over Pressentin Creek is a prestressed concrete stringer/multi-beam or girder carrying South Skagit HWY over Pressentin Creek in Skagit County, Washington. It was built in 1966, so it is 59 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.

It carries about 635 vehicles a day, roughly 12% of them trucks, projected to reach 944 by 2041. The structure is 85 ft (25.9 m) long and 29 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

CarriesSouth Skagit HWY
CrossesPressentin Creek
Location18.5 E JCT SR9
RouteCounty Highway 7000
Coordinates48.51694, -121.85041
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating32.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length85 ft (25.9 m)
Longest span75 ft (22.9 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic635 (2021)
Projected traffic944 by 2041
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$1.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was South Skagit HWY over Pressentin Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is South Skagit HWY over Pressentin 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 July 2024.

How much traffic does South Skagit HWY over Pressentin Creek carry?

About 635 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is South Skagit HWY over Pressentin Creek?

The structure is 85 ft (25.9 m) long with a longest span of 75 ft (22.9 m) and a deck 29 ft wide.

Who owns South Skagit HWY over Pressentin Creek?

It is owned by the County Highway Agency.