US Bridges

Nichols Road over Big River

Good

Clallam County, Washington · 0.07 N JCT CR91460 · Structure no. 088384000000000

Built
2011
14 years old
Condition
Good
inspected January 2024
Type
Tee Beam
Prestressed Concrete
Length
123 ft
1 main span
Daily traffic
30
2017 count
Owner
County
County Highway Agency

About this bridge

Nichols Road over Big River is a prestressed concrete tee beam carrying Nichols Road over Big River in Clallam County, Washington. It was built in 2011, so it is 14 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 30 vehicles a day, roughly 20% of them trucks, projected to reach 160 by 2037. The structure is 123 ft (37.5 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesNichols Road
CrossesBig River
Location0.07 N JCT CR91460
RouteCounty Highway 17700
Coordinates48.17347, -124.51216
Functional classRural Local

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.8 US tons
Inventory rating50.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length123 ft (37.5 m)
Longest span111 ft (33.8 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2017)
Projected traffic160 by 2037
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nichols Road over Big River built?

It was built in 2011, making it 14 years old in 2025.

What condition is Nichols Road over Big River 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 January 2024.

How much traffic does Nichols Road over Big River carry?

About 30 vehicles per day (2017 count), of which roughly 20% are trucks.

How long is Nichols Road over Big River?

The structure is 123 ft (37.5 m) long with a longest span of 111 ft (33.8 m) and a deck 26 ft wide.

Who owns Nichols Road over Big River?

It is owned by the County Highway Agency.