US Bridges

Stc 1811;PEGRAM RD over Bear River;pegram Bridge

Fair

Bear Lake County, Idaho · 0.8 W. Pegram · Structure no. 000000000019195

Built
1970
55 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
141 ft
2 main spans
Daily traffic
100
2023 count
Owner
County
County Highway Agency

About this bridge

Stc 1811;PEGRAM RD over Bear River;pegram Bridge is a prestressed concrete stringer/multi-beam or girder carrying Stc 1811;PEGRAM RD over Bear River;pegram Bridge in Bear Lake County, Idaho. It was built in 1970, so it is 55 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 100 vehicles a day, roughly 67% of them trucks, projected to reach 150 by 2042. The structure is 141 ft (43 m) long and 32 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesStc 1811;PEGRAM RD
CrossesBear River;pegram Bridge
Location0.8 W. Pegram
RouteCounty Highway 1811
StateIdaho
Coordinates42.13325, -111.13842
Functional classRural Major 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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum 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 spans2
Design loadH 20
Structure length141 ft (43 m)
Longest span69 ft (21 m)
Deck width32 ft (9.7 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic150 by 2042
Trucks67%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 Stc 1811;PEGRAM RD over Bear River;pegram Bridge built?

It was built in 1970, making it 55 years old in 2025.

What condition is Stc 1811;PEGRAM RD over Bear River;pegram Bridge 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 September 2024.

How much traffic does Stc 1811;PEGRAM RD over Bear River;pegram Bridge carry?

About 100 vehicles per day (2023 count), of which roughly 67% are trucks.

How long is Stc 1811;PEGRAM RD over Bear River;pegram Bridge?

The structure is 141 ft (43 m) long with a longest span of 69 ft (21 m) and a deck 32 ft wide.

Who owns Stc 1811;PEGRAM RD over Bear River;pegram Bridge?

It is owned by the County Highway Agency.