US Bridges

Stc 7785;BRIDGE ST over Sand Creek

Fair

Bonner County, Idaho · In Sandpoint;bridge ST · Structure no. 000000000030110

Built
1969
56 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Prestressed Concrete
Length
301 ft
5 main spans
Daily traffic
1,900
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Stc 7785;BRIDGE ST over Sand Creek is a prestressed concrete tee beam carrying Stc 7785;BRIDGE ST over Sand Creek in Bonner 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 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 1,900 vehicles a day, projected to reach 2,850 by 2042. The structure is 301 ft (91.7 m) long and 34 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesStc 7785;BRIDGE ST
CrossesSand Creek
LocationIn Sandpoint;bridge ST
RouteCity Street 7785
CountyBonner County
StateIdaho
Coordinates48.27386, -116.54683
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionOctober 2023
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
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length301 ft (91.7 m)
Longest span59 ft (18 m)
Deck width34 ft (10.4 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,900 (2023)
Projected traffic2,850 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4.8 million (2019 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Stc 7785;BRIDGE ST over Sand Creek built?

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

What condition is Stc 7785;BRIDGE ST over Sand 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 2023.

How much traffic does Stc 7785;BRIDGE ST over Sand Creek carry?

About 1,900 vehicles per day (2023 count).

How long is Stc 7785;BRIDGE ST over Sand Creek?

The structure is 301 ft (91.7 m) long with a longest span of 59 ft (18 m) and a deck 34 ft wide.

Who owns Stc 7785;BRIDGE ST over Sand Creek?

It is owned by the City or Municipal Highway Agency.