US Bridges

Oat Coles RD over Swift CR

Good

Whatcom County, Washington · 0.2 S. of South Pass RD · Structure no. 088918000000000

Built
2017
8 years old
Condition
Good
inspected May 2023
Type
Channel Beam
Concrete
Length
31 ft
1 main span
Daily traffic
223
2019 count
Owner
County
County Highway Agency

About this bridge

Oat Coles RD over Swift CR is a concrete channel beam carrying Oat Coles RD over Swift CR in Whatcom County, Washington. It was built in 2017, so it is 8 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 223 vehicles a day, roughly 3% of them trucks, projected to reach 420 by 2041. The structure is 31 ft (9.4 m) long and 17 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesOat Coles RD
CrossesSwift CR
Location0.2 S. of South Pass RD
RouteCounty Highway 65870
CountyWhatcom County
StateWashington
Coordinates48.91667, -122.3043
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 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating49.3 US tons
Inventory rating39.2 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length31 ft (9.4 m)
Longest span30 ft (9.1 m)
Deck width17 ft (5.2 m)
Roadway width15 ft (4.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic223 (2019)
Projected traffic420 by 2041
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedReplacement because of relocation of road
Estimated improvement cost$1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Oat Coles RD over Swift CR built?

It was built in 2017, making it 8 years old in 2025.

What condition is Oat Coles RD over Swift CR 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 2023.

How much traffic does Oat Coles RD over Swift CR carry?

About 223 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Oat Coles RD over Swift CR?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9.1 m) and a deck 17 ft wide.

Who owns Oat Coles RD over Swift CR?

It is owned by the County Highway Agency.