US Bridges

Mina Smith Road over Colby Creek

Fair

Clallam County, Washington · 00.70 Njct CRN11200 · Structure no. 080758000000000

Built
1980
45 years old
Condition
Fair
inspected January 2024
Type
Tee Beam
Prestressed Concrete
Length
68 ft
1 main span
Daily traffic
247
2017 count
Owner
County
County Highway Agency

About this bridge

Mina Smith Road over Colby Creek is a prestressed concrete tee beam carrying Mina Smith Road over Colby Creek in Clallam 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 5 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 247 vehicles a day, roughly 45% of them trucks, projected to reach 92 by 2036. The structure is 68 ft (20.7 m) long and 31 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesMina Smith Road
CrossesColby Creek
Location00.70 Njct CRN11200
RouteCounty Highway 11050
CountyClallam County
StateWashington
Coordinates47.95267, -124.54097
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating19 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length68 ft (20.7 m)
Longest span65 ft (19.8 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic247 (2017)
Projected traffic92 by 2036
Trucks45%
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 Mina Smith Road over Colby Creek built?

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

What condition is Mina Smith Road over Colby 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 2024.

How much traffic does Mina Smith Road over Colby Creek carry?

About 247 vehicles per day (2017 count), of which roughly 45% are trucks.

How long is Mina Smith Road over Colby Creek?

The structure is 68 ft (20.7 m) long with a longest span of 65 ft (19.8 m) and a deck 31 ft wide.

Who owns Mina Smith Road over Colby Creek?

It is owned by the County Highway Agency.