US Bridges

Fairfax Forest RD over Poch Creek

Good

Pierce County, Washington · 5.1 SE JCT SR 165 · Structure no. 086250000000000

Built
1996
29 years old
Condition
Good
inspected September 2024
Type
Slab
Prestressed Concrete
Length
47 ft
1 main span
Daily traffic
300
2020 count
Owner
County
County Highway Agency

About this bridge

Fairfax Forest RD over Poch Creek is a prestressed concrete slab carrying Fairfax Forest RD over Poch Creek in Pierce County, Washington. It was built in 1996, so it is 29 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 300 vehicles a day, roughly 15% of them trucks, projected to reach 500 by 2041. The structure is 47 ft (14.3 m) long and 28 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesFairfax Forest RD
CrossesPoch Creek
Location5.1 SE JCT SR 165
RouteCounty Highway 97350
Coordinates46.98605, -121.957
Functional classRural Major Collector

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 protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 alignment8: Equal to present desirable criteria
Operating rating93 US tons
Inventory rating56 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length47 ft (14.3 m)
Longest span47 ft (14.3 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2020)
Projected traffic500 by 2041
Trucks15%
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.7 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Fairfax Forest RD over Poch Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is Fairfax Forest RD over Poch 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 September 2024.

How much traffic does Fairfax Forest RD over Poch Creek carry?

About 300 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is Fairfax Forest RD over Poch Creek?

The structure is 47 ft (14.3 m) long with a longest span of 47 ft (14.3 m) and a deck 28 ft wide.

Who owns Fairfax Forest RD over Poch Creek?

It is owned by the County Highway Agency.