US Bridges

Conrad Road over Sutter Creek

Good

Skagit County, Washington · 0.59 E JCT SR20 · Structure no. 088329000000000

Built
2011
14 years old
Condition
Good
inspected June 2023
Type
Slab
Prestressed Concrete
Length
73 ft
1 main span
Daily traffic
23
2023 count
Owner
County
County Highway Agency

About this bridge

Conrad Road over Sutter Creek is a prestressed concrete slab carrying Conrad Road over Sutter Creek in Skagit County, Washington. It was built in 2011, so it is 14 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 23 vehicles a day, roughly 1% of them trucks, projected to reach 28 by 2043. The structure is 73 ft (22.3 m) long and 16 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesConrad Road
CrossesSutter Creek
Location0.59 E JCT SR20
RouteCounty Highway 97600
Coordinates48.49467, -121.54756
Functional classRural Local

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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating66 US tons
Inventory rating58 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length73 ft (22.3 m)
Longest span68 ft (20.7 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23 (2023)
Projected traffic28 by 2043
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$694,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Conrad Road over Sutter Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is Conrad Road over Sutter 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 June 2023.

How much traffic does Conrad Road over Sutter Creek carry?

About 23 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Conrad Road over Sutter Creek?

The structure is 73 ft (22.3 m) long with a longest span of 68 ft (20.7 m) and a deck 16 ft wide.

Who owns Conrad Road over Sutter Creek?

It is owned by the County Highway Agency.