US Bridges

SH 162 over Seven Mile Creek

Fair

Idaho County, Idaho · 4.4 S. Kamiah · Structure no. 000000000014924

Built
1997
28 years old
Condition
Fair
inspected July 2024
Type
Culvert
Steel
Length
26 ft
1 main span
Daily traffic
970
2023 count
Owner
State
State Highway Agency

About this bridge

SH 162 over Seven Mile Creek is a steel culvert carrying SH 162 over Seven Mile Creek in Idaho County, Idaho. It was built in 1997, so it is 28 years old, younger 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 970 vehicles a day, roughly 9% of them trucks, projected to reach 1,455 by 2042. The structure is 26 ft (7.9 m) long and 58 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesSH 162
CrossesSeven Mile Creek
Location4.4 S. Kamiah
RouteState Highway 162
StateIdaho
Coordinates46.17322, -116.07133
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length26 ft (7.9 m)
Longest span26 ft (7.9 m)
Deck width58 ft (17.7 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic970 (2023)
Projected traffic1,455 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SH 162 over Seven Mile Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is SH 162 over Seven Mile 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 July 2024.

How much traffic does SH 162 over Seven Mile Creek carry?

About 970 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is SH 162 over Seven Mile Creek?

The structure is 26 ft (7.9 m) long with a longest span of 26 ft (7.9 m) and a deck 58 ft wide.

Who owns SH 162 over Seven Mile Creek?

It is owned by the State Highway Agency.