US Bridges

Townsend Road over Mill Cr.

Good

Lewis County, Washington · 1.1 S JCT SR 508 · Structure no. 089250000000000

Built
2021
4 years old
Condition
Good
inspected November 2023
Type
Slab
Concrete
Length
64 ft
1 main span
Daily traffic
1
2021 count
Owner
County
County Highway Agency

About this bridge

Townsend Road over Mill Cr. is a concrete slab carrying Townsend Road over Mill Cr. in Lewis County, Washington. It was built in 2021, so it is 4 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1 vehicles a day, projected to reach 2 by 2041. The structure is 64 ft (19.4 m) long and 22 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesTownsend Road
CrossesMill Cr.
Location1.1 S JCT SR 508
RouteCounty Highway 65605
CountyLewis County
StateWashington
Coordinates46.59228, -122.54722
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating55.3 US tons
Inventory rating42.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckOther
Main spans1
Design loadHL 93
Structure length64 ft (19.4 m)
Longest span56 ft (17.1 m)
Deck width22 ft (6.6 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1 (2021)
Projected traffic2 by 2041
Trucks0%
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 statusNot eligible for the National Register of Historic Places
Work proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$666,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Townsend Road over Mill Cr. built?

It was built in 2021, making it 4 years old in 2025.

What condition is Townsend Road over Mill Cr. 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 November 2023.

How much traffic does Townsend Road over Mill Cr. carry?

About 1 vehicles per day (2021 count).

How long is Townsend Road over Mill Cr.?

The structure is 64 ft (19.4 m) long with a longest span of 56 ft (17.1 m) and a deck 22 ft wide.

Who owns Townsend Road over Mill Cr.?

It is owned by the County Highway Agency.