US Bridges

Sma 7505;N Spokane over Spokane R.;post Falls Br

Fair

Kootenai County, Idaho · Post Falls Scl · Structure no. 000000000020440

Built
1971
54 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
900 ft
14 main spans
Daily traffic
6,400
2023 count
Owner
Local
Other Local Agency

About this bridge

Sma 7505;N Spokane over Spokane R.;post Falls Br is a prestressed concrete stringer/multi-beam or girder carrying Sma 7505;N Spokane over Spokane R.;post Falls Br in Kootenai County, Idaho. It was built in 1971, so it is 54 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 6,400 vehicles a day, roughly 5% of them trucks, projected to reach 9,600 by 2042. The structure is 900 ft (274.3 m) long and 44 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesSma 7505;N Spokane
CrossesSpokane R.;post Falls Br
LocationPost Falls Scl
RouteCounty Highway 7505
StateIdaho
Coordinates47.70572, -116.94829
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans14
Design loadHS 20
Structure length900 ft (274.3 m)
Longest span119 ft (36.3 m)
Deck width44 ft (13.3 m)
Roadway width35 ft (10.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,400 (2023)
Projected traffic9,600 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$14 million (2018 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Sma 7505;N Spokane over Spokane R.;post Falls Br built?

It was built in 1971, making it 54 years old in 2025.

What condition is Sma 7505;N Spokane over Spokane R.;post Falls Br 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 August 2024.

How much traffic does Sma 7505;N Spokane over Spokane R.;post Falls Br carry?

About 6,400 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Sma 7505;N Spokane over Spokane R.;post Falls Br?

The structure is 900 ft (274.3 m) long with a longest span of 119 ft (36.3 m) and a deck 44 ft wide.

Who owns Sma 7505;N Spokane over Spokane R.;post Falls Br?

It is owned by the Other Local Agency.