Structure 18750 · Boundary County, ID

US 95 over Deep Cr;bnrr;uprr;naples

Carries US 95 over Deep Cr;bnrr;uprr;naples, 0.4 S. Naples.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT730 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

730 ft end to end, longest span 117 ft: about 2.0 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built196561 years old
Length730.0 ft222.5 m
Daily traffic7,300counted 2023
Last inspectedJune 2024every 24 months

Location

StateIdaho
CountyBoundary
Location0.4 S. Naples
CarriesUS 95
CrossesDeep Cr;bnrr;uprr;naples
Coordinates48.56458, -116.39450

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length730.0 ft (222.5 m)
Max Span117.1 ft (35.7 m)
Deck Width32.8 ft (10 m)
Deck Area2,225 sq m
Main Spans8
Year Built1965

Traffic

Avg Daily Traffic7,300 (2023)
Truck Traffic22%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number000000000018750

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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