US Bridges

I-5 S-W/Sr 20 E-S over Nevitt Road

Good

Skagit County, Washington · 2.4 N JCT SR 538 · Structure no. 0017484B0000000

Built
2009
16 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
115 ft
1 main span
Daily traffic
5,326
2023 count
Owner
State
State Highway Agency

About this bridge

I-5 S-W/Sr 20 E-S over Nevitt Road is a prestressed concrete stringer/multi-beam or girder carrying I-5 S-W/Sr 20 E-S over Nevitt Road in Skagit County, Washington. It was built in 2009, so it is 16 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 5,326 vehicles a day, roughly 14% of them trucks, projected to reach 8,159 by 2039. The structure is 115 ft (35.1 m) long and 79 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-5 S-W/Sr 20 E-S
CrossesNevitt Road
Location2.4 N JCT SR 538
RouteInterstate 5
CountySkagit County
StateWashington
Coordinates48.46754, -122.344
Functional classUrban Principal Arterial - Interstate

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.3 US tons
Inventory rating41.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length115 ft (35.1 m)
Longest span112 ft (34.1 m)
Deck width79 ft (24.1 m)
Roadway width74 ft (22.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,326 (2023)
Projected traffic8,159 by 2039
Trucks14%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$4.2 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 S-W/Sr 20 E-S over Nevitt Road built?

It was built in 2009, making it 16 years old in 2025.

What condition is I-5 S-W/Sr 20 E-S over Nevitt Road 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 July 2023.

How much traffic does I-5 S-W/Sr 20 E-S over Nevitt Road carry?

About 5,326 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is I-5 S-W/Sr 20 E-S over Nevitt Road?

The structure is 115 ft (35.1 m) long with a longest span of 112 ft (34.1 m) and a deck 79 ft wide.

Who owns I-5 S-W/Sr 20 E-S over Nevitt Road?

It is owned by the State Highway Agency.