US Bridges

SR 27 over Rattler Run CR UPRR

Fair

Spokane County, Washington · 11.9 N Whitman CO · Structure no. 0007027A0000000

Built
1963
62 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
283 ft
4 main spans
Daily traffic
1,768
2023 count
Owner
State
State Highway Agency

About this bridge

SR 27 over Rattler Run CR UPRR is a prestressed concrete stringer/multi-beam or girder carrying SR 27 over Rattler Run CR UPRR in Spokane County, Washington. It was built in 1963, so it is 62 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,768 vehicles a day, roughly 6% of them trucks, projected to reach 2,196 by 2039. The structure is 283 ft (86.3 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSR 27
CrossesRattler Run CR UPRR
Location11.9 N Whitman CO
RouteState Highway 27
CountySpokane County
StateWashington
Coordinates47.40319, -117.17463
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating61 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length283 ft (86.3 m)
Longest span67 ft (20.5 m)
Deck width32 ft (9.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,768 (2023)
Projected traffic2,196 by 2039
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 27 over Rattler Run CR UPRR built?

It was built in 1963, making it 62 years old in 2025.

What condition is SR 27 over Rattler Run CR UPRR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.

How much traffic does SR 27 over Rattler Run CR UPRR carry?

About 1,768 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is SR 27 over Rattler Run CR UPRR?

The structure is 283 ft (86.3 m) long with a longest span of 67 ft (20.5 m) and a deck 32 ft wide.

Who owns SR 27 over Rattler Run CR UPRR?

It is owned by the State Highway Agency.