US Bridges

Swayze RD over Int Swayze Road I 15 002

Fair

Toole County, Montana · 4M SE Sunburst · Structure no. L51028004+05001

Built
1971
54 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
224 ft
2 main spans
Daily traffic
13
2023 count
Owner
State
State Highway Agency

About this bridge

Swayze RD over Int Swayze Road I 15 002 is a steel continuous stringer/multi-beam or girder carrying Swayze RD over Int Swayze Road I 15 002 in Toole 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 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 13 vehicles a day, roughly 3% of them trucks, projected to reach 14 by 2043. The structure is 224 ft (68.2 m) long and 34 ft wide.

CarriesSwayze RD
CrossesInt Swayze Road I 15 002
Location4M SE Sunburst
RouteCounty Highway 51028
StateMontana
Coordinates48.82699, -111.86286
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.1 US tons
Inventory rating27 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length224 ft (68.2 m)
Longest span110 ft (33.5 m)
Deck width34 ft (10.5 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13 (2023)
Projected traffic14 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 Swayze RD over Int Swayze Road I 15 002 built?

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

What condition is Swayze RD over Int Swayze Road I 15 002 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 October 2023.

How much traffic does Swayze RD over Int Swayze Road I 15 002 carry?

About 13 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Swayze RD over Int Swayze Road I 15 002?

The structure is 224 ft (68.2 m) long with a longest span of 110 ft (33.5 m) and a deck 34 ft wide.

Who owns Swayze RD over Int Swayze Road I 15 002?

It is owned by the State Highway Agency.