US Bridges

Ferry Ramp over Columbia R/Sr 409

Good

Wahkiakum County, Washington · 0.0 S SR 409 · Structure no. 088247000000000

Built
2010
15 years old
Condition
Good
inspected December 2024
Type
Girder and Floorbeam System
Steel
Length
182 ft
2 main spans
Daily traffic
200
2011 count
Owner
County
County Highway Agency

About this bridge

Ferry Ramp over Columbia R/Sr 409 is a steel girder and floorbeam system carrying Ferry Ramp over Columbia R/Sr 409 in Wahkiakum County, Washington. It was built in 2010, so it is 15 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 200 vehicles a day, roughly 1% of them trucks, projected to reach 266 by 2031. The structure is 182 ft (55.5 m) long and 30 ft wide. If it were closed, the detour would be 60.3 mi (97 km).

Location

Open in Google Maps
CarriesFerry Ramp
CrossesColumbia R/Sr 409
Location0.0 S SR 409
RouteCounty Highway 409
CountyWahkiakum County
StateWashington
Coordinates46.15392, -123.37772
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.7 US tons
Inventory rating28.2 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans2 (+1 approach)
Design loadHS 25 or greater
Structure length182 ft (55.5 m)
Longest span93 ft (28.3 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2011)
Projected traffic266 by 2031
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed60.3 mi (97 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byOther State Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$2.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Ferry Ramp over Columbia R/Sr 409 built?

It was built in 2010, making it 15 years old in 2025.

What condition is Ferry Ramp over Columbia R/Sr 409 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 December 2024.

How much traffic does Ferry Ramp over Columbia R/Sr 409 carry?

About 200 vehicles per day (2011 count), of which roughly 1% are trucks.

How long is Ferry Ramp over Columbia R/Sr 409?

The structure is 182 ft (55.5 m) long with a longest span of 93 ft (28.3 m) and a deck 30 ft wide.

Who owns Ferry Ramp over Columbia R/Sr 409?

It is owned by the County Highway Agency and maintained by the Other State Agency.