US Bridges

Moffit Gulch RD over Rocky Creek 044

FairPosted for load

Gallatin County, Montana · 3M SE Bozeman · Structure no. L16192000+05001

Built
1976
49 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
29 ft
1 main span
Daily traffic
149
2023 count
Owner
County
County Highway Agency

About this bridge

Moffit Gulch RD over Rocky Creek 044 is a steel stringer/multi-beam or girder carrying Moffit Gulch RD over Rocky Creek 044 in Gallatin County, Montana. It was built in 1976, so it is 49 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. Its operating status is: posted for load restriction.

It carries about 149 vehicles a day, roughly 3% of them trucks, projected to reach 159 by 2043. The structure is 29 ft (8.8 m) long and 20 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesMoffit Gulch RD
CrossesRocky Creek 044
Location3M SE Bozeman
RouteCounty Highway 16192
CountyGallatin County
StateMontana
Coordinates45.65454, -110.9431
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30 US tons
Inventory rating23 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span28 ft (8.5 m)
Deck width20 ft (6.2 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic149 (2023)
Projected traffic159 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Moffit Gulch RD over Rocky Creek 044 built?

It was built in 1976, making it 49 years old in 2025.

What condition is Moffit Gulch RD over Rocky Creek 044 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 April 2023.

How much traffic does Moffit Gulch RD over Rocky Creek 044 carry?

About 149 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Moffit Gulch RD over Rocky Creek 044?

The structure is 29 ft (8.8 m) long with a longest span of 28 ft (8.5 m) and a deck 20 ft wide.

Who owns Moffit Gulch RD over Rocky Creek 044?

It is owned by the County Highway Agency.