US Bridges

Nicholson RD over Childs Creek

Good

Skagit County, Washington · 0.1 S JCT SR 20 · Structure no. 082292000000000

Built
1979
46 years old
Condition
Good
inspected May 2024
Type
Slab
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
40
2021 count
Owner
County
County Highway Agency

About this bridge

Nicholson RD over Childs Creek is a prestressed concrete slab carrying Nicholson RD over Childs Creek in Skagit County, Washington. It was built in 1979, so it is 46 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 40 vehicles a day, roughly 5% of them trucks, projected to reach 60 by 2041. The structure is 29 ft (8.8 m) long and 17 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNicholson RD
CrossesChilds Creek
Location0.1 S JCT SR 20
RouteCounty Highway 93110
Coordinates48.52711, -122.09025
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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span27 ft (8.2 m)
Deck width17 ft (5.2 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2021)
Projected traffic60 by 2041
Trucks5%
Lanes on structure1
Traffic directionOne-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 statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$289,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nicholson RD over Childs Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is Nicholson RD over Childs 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 May 2024.

How much traffic does Nicholson RD over Childs Creek carry?

About 40 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Nicholson RD over Childs Creek?

The structure is 29 ft (8.8 m) long with a longest span of 27 ft (8.2 m) and a deck 17 ft wide.

Who owns Nicholson RD over Childs Creek?

It is owned by the County Highway Agency.