US Bridges

I 15 Sbl over Co.Rd.;stoddard Creek Ic

PoorClosed to traffic

Clark County, Idaho · 4.0 N. Spencer · Structure no. 000000000011970

Built
1969
56 years old
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
107 ft
3 main spans
Daily traffic
1,750
2023 count
Owner
State
State Highway Agency

About this bridge

I 15 Sbl over Co.Rd.;stoddard Creek Ic is a concrete stringer/multi-beam or girder carrying I 15 Sbl over Co.Rd.;stoddard Creek Ic in Clark County, Idaho. It was built in 1969, so it is 56 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 1 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 1,750 vehicles a day, roughly 34% of them trucks, projected to reach 2,625 by 2042. The structure is 107 ft (32.6 m) long and 41 ft wide.

CarriesI 15 Sbl
CrossesCo.Rd.;stoddard Creek Ic
Location4.0 N. Spencer
RouteInterstate 15
StateIdaho
Coordinates44.41369, -112.19981
Functional classRural Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck1 Imminent FailureMajor deterioration or section loss present in critical structural components. Bridge is closed to traffic but corrective action may put it back in light service.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusClosed to all traffic
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating41 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length107 ft (32.6 m)
Longest span37 ft (11.3 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,750 (2023)
Projected traffic2,625 by 2042
Trucks34%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 15 Sbl over Co.Rd.;stoddard Creek Ic built?

It was built in 1969, making it 56 years old in 2025.

What condition is I 15 Sbl over Co.Rd.;stoddard Creek Ic in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

How much traffic does I 15 Sbl over Co.Rd.;stoddard Creek Ic carry?

About 1,750 vehicles per day (2023 count), of which roughly 34% are trucks.

How long is I 15 Sbl over Co.Rd.;stoddard Creek Ic?

The structure is 107 ft (32.6 m) long with a longest span of 37 ft (11.3 m) and a deck 41 ft wide.

Who owns I 15 Sbl over Co.Rd.;stoddard Creek Ic?

It is owned by the State Highway Agency.