US Bridges

S384 over Dry Creek

Good

Big Horn County, Montana · 7M E Hardin · Structure no. 000000202308049

Built
2023
2 years old
Condition
Good
inspected November 2023
Type
Culvert
Steel
Length
23 ft
2 main spans
Daily traffic
220
2023 count
Owner
State
State Highway Agency

About this bridge

S384 over Dry Creek is a steel culvert carrying S384 over Dry Creek in Big Horn County, Montana. It was built in 2023, so it is 2 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 220 vehicles a day, roughly 7% of them trucks, projected to reach 233 by 2043. The structure is 23 ft (7 m) long and 23 ft wide.

CarriesS384
CrossesDry Creek
Location7M E Hardin
RouteState Highway 384
StateMontana
Coordinates45.7577, -107.4923
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHL 93
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width23 ft (7.1 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic220 (2023)
Projected traffic233 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 S384 over Dry Creek built?

It was built in 2023, making it 2 years old in 2025.

What condition is S384 over Dry Creek 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 November 2023.

How much traffic does S384 over Dry Creek carry?

About 220 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is S384 over Dry Creek?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m) and a deck 23 ft wide.

Who owns S384 over Dry Creek?

It is owned by the State Highway Agency.