US Bridges

Crystal Mnt Blvd over Silver Creek

Good

Pierce County, Washington · 4.67 E JCT 410 · Structure no. 088948000000000

Built
2016
9 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete
Length
32 ft
1 main span
Daily traffic
675
2020 count
Owner
County
County Highway Agency

About this bridge

Crystal Mnt Blvd over Silver Creek is a concrete culvert carrying Crystal Mnt Blvd over Silver Creek in Pierce County, Washington. It was built in 2016, so it is 9 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 675 vehicles a day, roughly 5% of them trucks, projected to reach 1,086 by 2041. The structure is 32 ft (9.8 m) long and 100 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesCrystal Mnt Blvd
CrossesSilver Creek
Location4.67 E JCT 410
RouteFederal Lands Road 97810
Coordinates46.95874, -121.47914
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94.2 US tons
Inventory rating72.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length32 ft (9.8 m)
Longest span32 ft (9.8 m)
Deck width100 ft (30.5 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic675 (2020)
Projected traffic1,086 by 2041
Trucks5%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.3 million (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Crystal Mnt Blvd over Silver Creek built?

It was built in 2016, making it 9 years old in 2025.

What condition is Crystal Mnt Blvd over Silver 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 August 2023.

How much traffic does Crystal Mnt Blvd over Silver Creek carry?

About 675 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Crystal Mnt Blvd over Silver Creek?

The structure is 32 ft (9.8 m) long with a longest span of 32 ft (9.8 m) and a deck 100 ft wide.

Who owns Crystal Mnt Blvd over Silver Creek?

It is owned by the County Highway Agency.