US Bridges

March Point Road over Petroleum Pipelines

Fair

Skagit County, Washington · 1.6 N JCT SR 20 · Structure no. 084366000000000

Built
1960
65 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete Continuous
Length
44 ft
3 main spans
Daily traffic
678
2023 count
Owner
County
County Highway Agency

About this bridge

March Point Road over Petroleum Pipelines is a concrete continuous slab carrying March Point Road over Petroleum Pipelines in Skagit County, Washington. It was built in 1960, so it is 65 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 6 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 678 vehicles a day, roughly 14% of them trucks, projected to reach 1,480 by 2041. The structure is 44 ft (13.5 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesMarch Point Road
CrossesPetroleum Pipelines
Location1.6 N JCT SR 20
RouteCounty Highway 16610
CountySkagit County
StateWashington
Coordinates48.48767, -122.57575
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47 US tons
Inventory rating28 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length44 ft (13.5 m)
Longest span14 ft (4.3 m)
Deck width30 ft (9.1 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic678 (2023)
Projected traffic1,480 by 2041
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was March Point Road over Petroleum Pipelines built?

It was built in 1960, making it 65 years old in 2025.

What condition is March Point Road over Petroleum Pipelines 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 September 2023.

How much traffic does March Point Road over Petroleum Pipelines carry?

About 678 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is March Point Road over Petroleum Pipelines?

The structure is 44 ft (13.5 m) long with a longest span of 14 ft (4.3 m) and a deck 30 ft wide.

Who owns March Point Road over Petroleum Pipelines?

It is owned by the County Highway Agency.