US Bridges

Nicholson Road over Lacamas Creek

Fair

Lewis County, Washington · 0.45 N Jct. 56000 · Structure no. 081854000000000

Built
1972
53 years old
Condition
Fair
inspected January 2023
Type
Slab
Concrete
Length
33 ft
1 main span
Daily traffic
98
2020 count
Owner
County
County Highway Agency

About this bridge

Nicholson Road over Lacamas Creek is a concrete slab carrying Nicholson Road over Lacamas Creek in Lewis County, Washington. It was built in 1972, so it is 53 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 98 vehicles a day, roughly 29% of them trucks, projected to reach 177 by 2040. The structure is 33 ft (10.1 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesNicholson Road
CrossesLacamas Creek
Location0.45 N Jct. 56000
RouteCounty Highway 56110
CountyLewis County
StateWashington
Coordinates46.5244, -122.7929
Functional classRural 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 inspectionJanuary 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.9 US tons
Inventory rating37 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length33 ft (10.1 m)
Longest span30 ft (9.1 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic98 (2020)
Projected traffic177 by 2040
Trucks29%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$423,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nicholson Road over Lacamas Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is Nicholson Road over Lacamas Creek 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 January 2023.

How much traffic does Nicholson Road over Lacamas Creek carry?

About 98 vehicles per day (2020 count), of which roughly 29% are trucks.

How long is Nicholson Road over Lacamas Creek?

The structure is 33 ft (10.1 m) long with a longest span of 30 ft (9.1 m) and a deck 26 ft wide.

Who owns Nicholson Road over Lacamas Creek?

It is owned by the County Highway Agency.