US Bridges

Delrey RD over Swift Creek 072

Fair

Flathead County, Montana · 7M NW Whitefish · Structure no. L15293000+07001

Built
1935
90 years old
Condition
Fair
inspected November 2023
Type
Truss - Thru
Steel
Length
61 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Delrey RD over Swift Creek 072 is a steel truss - thru carrying Delrey RD over Swift Creek 072 in Flathead County, Montana. It was built in 1935, so it is 90 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 61 ft (18.5 m) long and 13 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesDelrey RD
CrossesSwift Creek 072
Location7M NW Whitefish
RouteCounty Highway 15293
CountyFlathead County
StateMontana
Coordinates48.48513, -114.43371
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
Deck7 GoodSome minor problems.
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 protection7 GoodSome minor problems.
Last inspectionNovember 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
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length61 ft (18.5 m)
Longest span60 ft (18.3 m)
Deck width13 ft (4 m)
Roadway width12 ft (3.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 Delrey RD over Swift Creek 072 built?

It was built in 1935, making it 90 years old in 2025.

What condition is Delrey RD over Swift Creek 072 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 November 2023.

How much traffic does Delrey RD over Swift Creek 072 carry?

About 100 vehicles per day (2025 count), of which roughly 3% are trucks.

How long is Delrey RD over Swift Creek 072?

The structure is 61 ft (18.5 m) long with a longest span of 60 ft (18.3 m) and a deck 13 ft wide.

Who owns Delrey RD over Swift Creek 072?

It is owned by the County Highway Agency.