US Bridges

Sollid RD over Pondera Coulee

Good

Pondera County, Montana · 1M E Conrad · Structure no. S00218001+01001

Built
1971
54 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
100 ft
2 main spans
Daily traffic
572
2023 count
Owner
State
State Highway Agency

About this bridge

Sollid RD over Pondera Coulee is a prestressed concrete stringer/multi-beam or girder carrying Sollid RD over Pondera Coulee in Pondera County, Montana. It was built in 1971, so it is 54 years old, older than the Montana average of 47 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 572 vehicles a day, roughly 4% of them trucks, projected to reach 601 by 2043. The structure is 100 ft (30.5 m) long and 41 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesSollid RD
CrossesPondera Coulee
Location1M E Conrad
RouteState Highway 218
StateMontana
Coordinates48.17383, -111.91996
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating25 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span50 ft (15.2 m)
Deck width41 ft (12.6 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic572 (2023)
Projected traffic601 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sollid RD over Pondera Coulee built?

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

What condition is Sollid RD over Pondera Coulee 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 May 2023.

How much traffic does Sollid RD over Pondera Coulee carry?

About 572 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Sollid RD over Pondera Coulee?

The structure is 100 ft (30.5 m) long with a longest span of 50 ft (15.2 m) and a deck 41 ft wide.

Who owns Sollid RD over Pondera Coulee?

It is owned by the State Highway Agency.