US Bridges

Gus Blaze RD over Sep Gus Blase Road 011

Good

Toole County, Montana · 3M S Oilmont · Structure no. L51059007+02001

Built
1980
45 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
232 ft
2 main spans
Daily traffic
100
2025 count
Owner
State
State Highway Agency

About this bridge

Gus Blaze RD over Sep Gus Blase Road 011 is a prestressed concrete stringer/multi-beam or girder carrying Gus Blaze RD over Sep Gus Blase Road 011 in Toole County, Montana. It was built in 1980, so it is 45 years old, younger 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 232 ft (70.7 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesGus Blaze RD
CrossesSep Gus Blase Road 011
Location3M S Oilmont
RouteCounty Highway 51059
StateMontana
Coordinates48.69669, -111.86202
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating57 US tons
Inventory rating30 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length232 ft (70.7 m)
Longest span116 ft (35.3 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.4 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
CrossesHighway
Detour if closed3.7 mi (6 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Gus Blaze RD over Sep Gus Blase Road 011 built?

It was built in 1980, making it 45 years old in 2025.

What condition is Gus Blaze RD over Sep Gus Blase Road 011 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 October 2023.

How much traffic does Gus Blaze RD over Sep Gus Blase Road 011 carry?

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

How long is Gus Blaze RD over Sep Gus Blase Road 011?

The structure is 232 ft (70.7 m) long with a longest span of 116 ft (35.3 m) and a deck 30 ft wide.

Who owns Gus Blaze RD over Sep Gus Blase Road 011?

It is owned by the State Highway Agency.