US Bridges

Paradise Ridge RD over S.Fk.Palouse R;se.Moscow

Fair

Latah County, Idaho · 1.3 S. 0.5 E. Moscow · Structure no. 000000000029720

Built
1978
47 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
50
2023 count
Owner
Local
Other Local Agency

About this bridge

Paradise Ridge RD over S.Fk.Palouse R;se.Moscow is a steel stringer/multi-beam or girder carrying Paradise Ridge RD over S.Fk.Palouse R;se.Moscow in Latah County, Idaho. It was built in 1978, so it is 47 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 75 by 2039. The structure is 31 ft (9.4 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesParadise Ridge RD
CrossesS.Fk.Palouse R;se.Moscow
Location1.3 S. 0.5 E. Moscow
RouteCounty Highway 0
CountyLatah County
StateIdaho
Coordinates46.71242, -116.99081
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating99 US tons
Inventory rating59 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadH 15
Structure length31 ft (9.4 m)
Longest span30 ft (9.1 m)
Deck width26 ft (8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic75 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$594,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Paradise Ridge RD over S.Fk.Palouse R;se.Moscow built?

It was built in 1978, making it 47 years old in 2025.

What condition is Paradise Ridge RD over S.Fk.Palouse R;se.Moscow 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 Paradise Ridge RD over S.Fk.Palouse R;se.Moscow carry?

About 50 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Paradise Ridge RD over S.Fk.Palouse R;se.Moscow?

The structure is 31 ft (9.4 m) long with a longest span of 30 ft (9.1 m) and a deck 26 ft wide.

Who owns Paradise Ridge RD over S.Fk.Palouse R;se.Moscow?

It is owned by the Other Local Agency.