US Bridges

Park Entrance over Union Pacific RR

Good

Franklin County, Washington · Palouse Falls State Park · Structure no. 086475000000000

Built
1947
78 years old
Condition
Good
inspected March 2023
Type
Tee Beam
Concrete Continuous
Length
93 ft
3 main spans
Daily traffic
285
2010 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Park Entrance over Union Pacific RR is a concrete continuous tee beam carrying Park Entrance over Union Pacific RR in Franklin County, Washington. It was built in 1947, so it is 78 years old, older 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 285 vehicles a day, projected to reach 329 by 2036. The structure is 93 ft (28.3 m) long and 32 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesPark Entrance
CrossesUnion Pacific RR
LocationPalouse Falls State Park
RouteState Lands Road 71501
CountyFranklin County
StateWashington
Coordinates46.66422, -118.22919
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.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating24 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length93 ft (28.3 m)
Longest span36 ft (11 m)
Deck width32 ft (9.8 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic285 (2010)
Projected traffic329 by 2036
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$972,000 (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Park Entrance over Union Pacific RR built?

It was built in 1947, making it 78 years old in 2025.

What condition is Park Entrance over Union Pacific RR 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 March 2023.

How much traffic does Park Entrance over Union Pacific RR carry?

About 285 vehicles per day (2010 count).

How long is Park Entrance over Union Pacific RR?

The structure is 93 ft (28.3 m) long with a longest span of 36 ft (11 m) and a deck 32 ft wide.

Who owns Park Entrance over Union Pacific RR?

It is owned by the State Park, Forest, or Reservation Agency.