US Bridges

Stc 7704;PERIMETER over Paradise Creek

Fair

Latah County, Idaho · In Moscow;u I Access SH 8 · Structure no. 000000000021735

Built
1953
72 years old, rebuilt 1968
Condition
Fair
inspected September 2024
Type
Culvert
Steel
Length
30 ft
3 main spans
Daily traffic
7,000
2023 count
Owner
State
Other State Agency

About this bridge

Stc 7704;PERIMETER over Paradise Creek is a steel culvert carrying Stc 7704;PERIMETER over Paradise Creek in Latah County, Idaho. It was built in 1953 and reconstructed in 1968, so it is 72 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 7,000 vehicles a day, roughly 1% of them trucks, projected to reach 10,500 by 2042. The structure is 30 ft (9.1 m) long and 68 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesStc 7704;PERIMETER
CrossesParadise Creek
LocationIn Moscow;u I Access SH 8
RouteCity Street 7704
CountyLatah County
StateIdaho
Coordinates46.73203, -117.02458
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating39 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span17 ft (5.2 m)
Deck width68 ft (20.8 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,000 (2023)
Projected traffic10,500 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

OwnerOther State Agency
Maintained byOther State 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 7704;PERIMETER over Paradise Creek built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 1968.

What condition is Stc 7704;PERIMETER 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 7704;PERIMETER over Paradise Creek carry?

About 7,000 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Stc 7704;PERIMETER over Paradise Creek?

The structure is 30 ft (9.1 m) long with a longest span of 17 ft (5.2 m) and a deck 68 ft wide.

Who owns Stc 7704;PERIMETER over Paradise Creek?

It is owned by the Other State Agency.