US Bridges

S 327 over Drainage

Good

Roosevelt County, Montana · 3M East Bainville · Structure no. 000000202008020

Built
2020
5 years old
Condition
Good
inspected December 2024
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
267
2023 count
Owner
State
State Highway Agency

About this bridge

S 327 over Drainage is a concrete culvert carrying S 327 over Drainage in Roosevelt County, Montana. It was built in 2020, so it is 5 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 267 vehicles a day, roughly 26% of them trucks, projected to reach 282 by 2043. The structure is 23 ft (6.9 m) long. If it were closed, the detour would be 4.3 mi (7 km).

CarriesS 327
CrossesDrainage
Location3M East Bainville
RouteState Highway 327
StateMontana
Coordinates48.1375, -104.1634
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating43 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length23 ft (6.9 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic267 (2023)
Projected traffic282 by 2043
Trucks26%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed4.3 mi (7 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was S 327 over Drainage built?

It was built in 2020, making it 5 years old in 2025.

What condition is S 327 over Drainage 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 December 2024.

How much traffic does S 327 over Drainage carry?

About 267 vehicles per day (2023 count), of which roughly 26% are trucks.

How long is S 327 over Drainage?

The structure is 23 ft (6.9 m) long with a longest span of 11 ft (3.4 m).

Who owns S 327 over Drainage?

It is owned by the State Highway Agency.