US Bridges

3300 N; Syveria LN over Big Lost River

Fair

Butte County, Idaho · 1.3 N. 0.6 E. Moore · Structure no. 000000000031481

Built
1991
34 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
68 ft
1 main span
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

3300 N; Syveria LN over Big Lost River is a prestressed concrete stringer/multi-beam or girder carrying 3300 N; Syveria LN over Big Lost River in Butte County, Idaho. It was built in 1991, so it is 34 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 6 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 50 vehicles a day, roughly 10% of them trucks, projected to reach 75 by 2039. The structure is 68 ft (20.7 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries3300 N; Syveria LN
CrossesBig Lost River
Location1.3 N. 0.6 E. Moore
RouteCounty Highway 0
CountyButte County
StateIdaho
Coordinates43.75431, -113.35467
Functional classRural Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.5 US tons
Inventory rating48.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length68 ft (20.7 m)
Longest span66 ft (20.1 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic75 by 2039
Trucks10%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 3300 N; Syveria LN over Big Lost River built?

It was built in 1991, making it 34 years old in 2025.

What condition is 3300 N; Syveria LN over Big Lost River 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 2023.

How much traffic does 3300 N; Syveria LN over Big Lost River carry?

About 50 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is 3300 N; Syveria LN over Big Lost River?

The structure is 68 ft (20.7 m) long with a longest span of 66 ft (20.1 m) and a deck 30 ft wide.

Who owns 3300 N; Syveria LN over Big Lost River?

It is owned by the County Highway Agency.