US Bridges

US 101 over Columbia R Megler

Fair

Pacific County, Washington · 3.65 S Oregon Line · Structure no. 0007666B0000000

Built
1966
59 years old
Condition
Fair
inspected October 2019
Type
Truss - Thru
Steel
Length
3,677 ft
7 main spans
Daily traffic
6,800
2010 count
Owner
State
State Highway Agency

About this bridge

US 101 over Columbia R Megler is a steel truss - thru carrying US 101 over Columbia R Megler in Pacific County, Washington. It was built in 1966, so it is 59 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 6,800 vehicles a day, roughly 10% of them trucks, projected to reach 11,400 by 2030. The structure is 3,677 ft (1,120.7 m) long and 33 ft wide.

Location

Open in Google Maps
CarriesUS 101
CrossesColumbia R Megler
Location3.65 S Oregon Line
RouteU.S. Route 101
CountyPacific County
StateWashington
Coordinates46.23833, -123.87348
Functional classRural Principal Arterial - Other

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2019
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans7 (+8 approach)
Design loadHS 20
Structure length3,677 ft (1,120.7 m)
Longest span354 ft (107.9 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic6,800 (2010)
Projected traffic11,400 by 2030
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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$52.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 101 over Columbia R Megler built?

It was built in 1966, making it 59 years old in 2025.

What condition is US 101 over Columbia R Megler 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 October 2019.

How much traffic does US 101 over Columbia R Megler carry?

About 6,800 vehicles per day (2010 count), of which roughly 10% are trucks.

How long is US 101 over Columbia R Megler?

The structure is 3,677 ft (1,120.7 m) long with a longest span of 354 ft (107.9 m) and a deck 33 ft wide.

Who owns US 101 over Columbia R Megler?

It is owned by the State Highway Agency.