US Bridges

US 89 over Montpelier Creek

Good

Bear Lake County, Idaho · 7.0 E. Montpelier · Structure no. 000000000016711

Built
2003
22 years old
Condition
Good
inspected November 2023
Type
Frame
Concrete
Length
21 ft
1 main span
Daily traffic
1,300
2023 count
Owner
State
State Highway Agency

About this bridge

US 89 over Montpelier Creek is a concrete frame carrying US 89 over Montpelier Creek in Bear Lake County, Idaho. It was built in 2003, so it is 22 years old, younger than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,300 vehicles a day, roughly 7% of them trucks, projected to reach 1,950 by 2042. The structure is 21 ft (6.4 m) long and 73 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesUS 89
CrossesMontpelier Creek
Location7.0 E. Montpelier
RouteU.S. Route 89
StateIdaho
Coordinates42.34258, -111.17656
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating89.9 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length21 ft (6.4 m)
Longest span21 ft (6.4 m)
Deck width73 ft (22.2 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2023)
Projected traffic1,950 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 km)
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 89 over Montpelier Creek built?

It was built in 2003, making it 22 years old in 2025.

What condition is US 89 over Montpelier Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does US 89 over Montpelier Creek carry?

About 1,300 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is US 89 over Montpelier Creek?

The structure is 21 ft (6.4 m) long with a longest span of 21 ft (6.4 m) and a deck 73 ft wide.

Who owns US 89 over Montpelier Creek?

It is owned by the State Highway Agency.