US Bridges

E Boulevard ST over Big Spring Creek

Fair

Fergus County, Montana · Lewistown-E Boulevard ST · Structure no. U07104001+00801

Built
1920
105 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
20 ft
1 main span
Daily traffic
675
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

E Boulevard ST over Big Spring Creek is a concrete culvert carrying E Boulevard ST over Big Spring Creek in Fergus County, Montana. It was built in 1920, so it is 105 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 675 vehicles a day, projected to reach 709 by 2043. The structure is 20 ft (6.1 m) long and 55 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesE Boulevard ST
CrossesBig Spring Creek
LocationLewistown-E Boulevard ST
RouteCity Street 7104
CountyFergus County
StateMontana
Coordinates47.07036, -109.42342
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
Channel and channel protection7 GoodSome minor problems.
Culvert5 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
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29 US tons
Inventory rating23 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width55 ft (16.8 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic675 (2023)
Projected traffic709 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 E Boulevard ST over Big Spring Creek built?

It was built in 1920, making it 105 years old in 2025.

What condition is E Boulevard ST over Big Spring 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 August 2023.

How much traffic does E Boulevard ST over Big Spring Creek carry?

About 675 vehicles per day (2023 count).

How long is E Boulevard ST over Big Spring Creek?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 55 ft wide.

Who owns E Boulevard ST over Big Spring Creek?

It is owned by the City or Municipal Highway Agency.