US Bridges

Landmark Drive over Unnamed Creek

Good

Skagit County, Washington · East of JCT S Waugh RD · Structure no. 087596000000000

Built
1994
31 years old
Condition
Good
inspected October 2023
Type
Slab
Prestressed Concrete
Length
52 ft
1 main span
Daily traffic
500
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Landmark Drive over Unnamed Creek is a prestressed concrete slab carrying Landmark Drive over Unnamed Creek in Skagit County, Washington. It was built in 1994, so it is 31 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 500 vehicles a day, roughly 5% of them trucks, projected to reach 610 by 2043. The structure is 52 ft (15.8 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesLandmark Drive
CrossesUnnamed Creek
LocationEast of JCT S Waugh RD
RouteCity Street 820
CountySkagit County
StateWashington
Coordinates48.41342, -122.28653
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating68.2 US tons
Inventory rating40.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length52 ft (15.8 m)
Longest span50 ft (15.2 m)
Deck width44 ft (13.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2019)
Projected traffic610 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$741,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Landmark Drive over Unnamed Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is Landmark Drive over Unnamed Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does Landmark Drive over Unnamed Creek carry?

About 500 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Landmark Drive over Unnamed Creek?

The structure is 52 ft (15.8 m) long with a longest span of 50 ft (15.2 m) and a deck 44 ft wide.

Who owns Landmark Drive over Unnamed Creek?

It is owned by the City or Municipal Highway Agency.