US Bridges

Blazen RD over Pondera Coulee 079

Fair

Pondera County, Montana · Conrad-Blazen RD · Structure no. L37363000+02001

Built
2004
21 years old
Condition
Fair
inspected December 2023
Type
Tee Beam
Prestressed Concrete
Length
64 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Blazen RD over Pondera Coulee 079 is a prestressed concrete tee beam carrying Blazen RD over Pondera Coulee 079 in Pondera County, Montana. It was built in 2004, so it is 21 years old, younger than the Montana average of 47 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 64 ft (19.4 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesBlazen RD
CrossesPondera Coulee 079
LocationConrad-Blazen RD
RouteCounty Highway 37363
StateMontana
Coordinates48.16461, -111.93986
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating34 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length64 ft (19.4 m)
Longest span61 ft (18.7 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Blazen RD over Pondera Coulee 079 built?

It was built in 2004, making it 21 years old in 2025.

What condition is Blazen RD over Pondera Coulee 079 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 December 2023.

How much traffic does Blazen RD over Pondera Coulee 079 carry?

About 100 vehicles per day (2025 count), of which roughly 3% are trucks.

How long is Blazen RD over Pondera Coulee 079?

The structure is 64 ft (19.4 m) long with a longest span of 61 ft (18.7 m) and a deck 28 ft wide.

Who owns Blazen RD over Pondera Coulee 079?

It is owned by the County Highway Agency.