US Bridges

Sheridan Ave over Sep Sheridan ST I 15 002

Fair

Silver Bow County, Montana · Butte-Sheridan Ave · Structure no. M47018000+00031

Built
1960
65 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
209 ft
4 main spans
Daily traffic
1,995
2023 count
Owner
State
State Highway Agency

About this bridge

Sheridan Ave over Sep Sheridan ST I 15 002 is a prestressed concrete stringer/multi-beam or girder carrying Sheridan Ave over Sep Sheridan ST I 15 002 in Silver Bow County, Montana. It was built in 1960, so it is 65 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 1,995 vehicles a day, projected to reach 2,095 by 2043. The structure is 209 ft (63.7 m) long and 36 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesSheridan Ave
CrossesSep Sheridan ST I 15 002
LocationButte-Sheridan Ave
RouteCity Street 47018
CountySilver Bow County
StateMontana
Coordinates45.98092, -112.49256
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating46 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length209 ft (63.7 m)
Longest span55 ft (16.8 m)
Deck width36 ft (11 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,995 (2023)
Projected traffic2,095 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed5 mi (8 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 Sheridan Ave over Sep Sheridan ST I 15 002 built?

It was built in 1960, making it 65 years old in 2025.

What condition is Sheridan Ave over Sep Sheridan ST 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 August 2023.

How much traffic does Sheridan Ave over Sep Sheridan ST I 15 002 carry?

About 1,995 vehicles per day (2023 count).

How long is Sheridan Ave over Sep Sheridan ST I 15 002?

The structure is 209 ft (63.7 m) long with a longest span of 55 ft (16.8 m) and a deck 36 ft wide.

Who owns Sheridan Ave over Sep Sheridan ST I 15 002?

It is owned by the State Highway Agency.