US Bridges

Stc 7664;W. 6th ST over Paradise Creek

Fair

Latah County, Idaho · In MOSCOW;W.6th St. · Structure no. 000000000021700

Built
1916
109 years old, rebuilt 1939
Condition
Fair
inspected September 2024
Type
Arch - Deck
Concrete
Length
38 ft
1 main span
Daily traffic
7,500
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Stc 7664;W. 6th ST over Paradise Creek is a concrete arch - deck carrying Stc 7664;W. 6th ST over Paradise Creek in Latah County, Idaho. It was built in 1916 and reconstructed in 1939, so it is 109 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 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 7,500 vehicles a day, roughly 1% of them trucks, projected to reach 11,250 by 2042. The structure is 38 ft (11.6 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesStc 7664;W. 6th ST
CrossesParadise Creek
LocationIn MOSCOW;W.6th St.
RouteCity Street 7664
CountyLatah County
StateIdaho
Coordinates46.72992, -117.00678
Functional classUrban 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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadH 15
Structure length38 ft (11.6 m)
Longest span33 ft (10.1 m)
Deck width52 ft (15.8 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,500 (2023)
Projected traffic11,250 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Stc 7664;W. 6th ST over Paradise Creek built?

It was built in 1916, making it 109 years old in 2025. It was reconstructed in 1939.

What condition is Stc 7664;W. 6th ST over Paradise Creek 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 September 2024.

How much traffic does Stc 7664;W. 6th ST over Paradise Creek carry?

About 7,500 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Stc 7664;W. 6th ST over Paradise Creek?

The structure is 38 ft (11.6 m) long with a longest span of 33 ft (10.1 m) and a deck 52 ft wide.

Who owns Stc 7664;W. 6th ST over Paradise Creek?

It is owned by the City or Municipal Highway Agency.