US Bridges

Fern Loop over Cid Canal

Fair

Benton County, Washington · JCT Fern Lp/Grosscup Blvd · Structure no. 087053000000000

Built
1980
45 years old
Condition
Fair
inspected November 2023
Type
Channel Beam
Concrete
Length
28 ft
1 main span
Daily traffic
228
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Fern Loop over Cid Canal is a concrete channel beam carrying Fern Loop over Cid Canal in Benton County, Washington. It was built in 1980, so it is 45 years old, younger 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 228 vehicles a day, roughly 1% of them trucks, projected to reach 495 by 2038. The structure is 28 ft (8.5 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesFern Loop
CrossesCid Canal
LocationJCT Fern Lp/Grosscup Blvd
RouteCity Street 1425
CountyBenton County
StateWashington
Coordinates46.30596, -119.35944
Functional classUrban Local

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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31 US tons
Inventory rating18 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckOther
Main spans1
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span27 ft (8.2 m)
Deck width44 ft (13.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic228 (2018)
Projected traffic495 by 2038
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$572,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Fern Loop over Cid Canal built?

It was built in 1980, making it 45 years old in 2025.

What condition is Fern Loop over Cid Canal 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 November 2023.

How much traffic does Fern Loop over Cid Canal carry?

About 228 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Fern Loop over Cid Canal?

The structure is 28 ft (8.5 m) long with a longest span of 27 ft (8.2 m) and a deck 44 ft wide.

Who owns Fern Loop over Cid Canal?

It is owned by the City or Municipal Highway Agency.