US Bridges

Cannon Rd. over Butter Creek

Good

Lewis County, Washington · 2.83 N JCT US 12 · Structure no. 081128000000000

Built
1976
49 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
110 ft
1 main span
Daily traffic
757
2022 count
Owner
County
County Highway Agency

About this bridge

Cannon Rd. over Butter Creek is a prestressed concrete stringer/multi-beam or girder carrying Cannon Rd. over Butter Creek in Lewis County, Washington. It was built in 1976, so it is 49 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 757 vehicles a day, roughly 14% of them trucks, projected to reach 1,368 by 2042. The structure is 110 ft (33.5 m) long and 31 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesCannon Rd.
CrossesButter Creek
Location2.83 N JCT US 12
RouteCounty Highway 72650
Coordinates46.63389, -121.66578
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than 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 rating98 US tons
Inventory rating51 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length110 ft (33.5 m)
Longest span93 ft (28.2 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic757 (2022)
Projected traffic1,368 by 2042
Trucks14%
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$1.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cannon Rd. over Butter Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is Cannon Rd. over Butter Creek 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 Cannon Rd. over Butter Creek carry?

About 757 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is Cannon Rd. over Butter Creek?

The structure is 110 ft (33.5 m) long with a longest span of 93 ft (28.2 m) and a deck 31 ft wide.

Who owns Cannon Rd. over Butter Creek?

It is owned by the County Highway Agency.