US Bridges

Longmire Service R over Nisqually River

PoorPosted for load

Pierce County, Washington · 0.25 Miles East of Longmi · Structure no. 9450002P0000000

Built
1923
102 years old, rebuilt 2005
Condition
Poor
inspected August 2024
Type
Suspension
Wood or Timber
Length
180 ft
1 main span
Daily traffic
250
2019 count
Owner
Federal
National Park Service

About this bridge

Longmire Service R over Nisqually River is a wood or timber suspension carrying Longmire Service R over Nisqually River in Pierce County, Washington. It was built in 1923 and reconstructed in 2005, so it is 102 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 250 vehicles a day, roughly 2% of them trucks, projected to reach 400 by 2039. The structure is 180 ft (54.9 m) long and 15 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesLongmire Service R
CrossesNisqually River
Location0.25 Miles East of Longmi
RouteFederal Lands Road 100
Coordinates46.74869, -121.80756
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating16 US tons
Inventory rating11 US tons

Structure

Structure typeSuspension
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length180 ft (54.9 m)
Longest span180 ft (54.9 m)
Deck width15 ft (4.5 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deck8 ft (2.4 m)

Traffic and service

Average daily traffic250 (2019)
Projected traffic400 by 2039
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerNational Park Service
Maintained byNational Park Service
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$1.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Longmire Service R over Nisqually River built?

It was built in 1923, making it 102 years old in 2025. It was reconstructed in 2005.

What condition is Longmire Service R over Nisqually River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does Longmire Service R over Nisqually River carry?

About 250 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is Longmire Service R over Nisqually River?

The structure is 180 ft (54.9 m) long with a longest span of 180 ft (54.9 m) and a deck 15 ft wide.

Who owns Longmire Service R over Nisqually River?

It is owned by the National Park Service.