US Bridges

S5907;DEEP Crk Lp over Deep Creek

Fair

Boundary County, Idaho · 3.5 N. Naples · Structure no. 000000000030385

Built
1975
50 years old
Condition
Fair
inspected October 2024
Type
Tee Beam
Prestressed Concrete
Length
58 ft
1 main span
Daily traffic
570
2023 count
Owner
County
County Highway Agency

About this bridge

S5907;DEEP Crk Lp over Deep Creek is a prestressed concrete tee beam carrying S5907;DEEP Crk Lp over Deep Creek in Boundary County, Idaho. It was built in 1975, so it is 50 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 570 vehicles a day, roughly 10% of them trucks, projected to reach 855 by 2042. The structure is 58 ft (17.7 m) long and 30 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

Open in Google Maps
CarriesS5907;DEEP Crk Lp
CrossesDeep Creek
Location3.5 N. Naples
RouteCounty Highway 5907
CountyBoundary County
StateIdaho
Coordinates48.62108, -116.39485
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionOctober 2024
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating37.7 US tons
Inventory rating27.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 15
Structure length58 ft (17.7 m)
Longest span53 ft (16.2 m)
Deck width30 ft (9.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic570 (2023)
Projected traffic855 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$602,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S5907;DEEP Crk Lp over Deep Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is S5907;DEEP Crk Lp over Deep 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 October 2024.

How much traffic does S5907;DEEP Crk Lp over Deep Creek carry?

About 570 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is S5907;DEEP Crk Lp over Deep Creek?

The structure is 58 ft (17.7 m) long with a longest span of 53 ft (16.2 m) and a deck 30 ft wide.

Who owns S5907;DEEP Crk Lp over Deep Creek?

It is owned by the County Highway Agency.