US Bridges

S Shiloh RD over Canyon Creek

Fair

Yellowstone County, Montana · 2M SW Billings · Structure no. S00429002+06061

Built
1959
66 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
153 ft
3 main spans
Daily traffic
3,901
2023 count
Owner
State
State Highway Agency

About this bridge

S Shiloh RD over Canyon Creek is a prestressed concrete stringer/multi-beam or girder carrying S Shiloh RD over Canyon Creek in Yellowstone County, Montana. It was built in 1959, so it is 66 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 5 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 3,901 vehicles a day, roughly 1% of them trucks, projected to reach 4,096 by 2043. The structure is 153 ft (46.6 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesS Shiloh RD
CrossesCanyon Creek
Location2M SW Billings
RouteCity Street 1031
CountyYellowstone County
StateMontana
Coordinates45.72979, -108.61954
Functional classUrban Minor Arterial

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating28 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length153 ft (46.6 m)
Longest span52 ft (15.8 m)
Deck width32 ft (9.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,901 (2023)
Projected traffic4,096 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$432,000
NavigationNo navigation control on waterway

Frequently asked questions

When was S Shiloh RD over Canyon Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is S Shiloh RD over Canyon Creek 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 June 2023.

How much traffic does S Shiloh RD over Canyon Creek carry?

About 3,901 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is S Shiloh RD over Canyon Creek?

The structure is 153 ft (46.6 m) long with a longest span of 52 ft (15.8 m) and a deck 32 ft wide.

Who owns S Shiloh RD over Canyon Creek?

It is owned by the State Highway Agency.