US Bridges

Old Freight RD over Post Creek 053

Good

Lake County, Montana · 3M NW ST Ignatius · Structure no. 000000000003295

Built
2016
9 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
65 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Old Freight RD over Post Creek 053 is a steel stringer/multi-beam or girder carrying Old Freight RD over Post Creek 053 in Lake County, Montana. It was built in 2016, so it is 9 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 65 ft (19.8 m) long and 24 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesOld Freight RD
CrossesPost Creek 053
Location3M NW ST Ignatius
RouteCounty Highway 24309
StateMontana
Coordinates47.36602, -114.14756
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.5 US tons
Inventory rating20.4 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length65 ft (19.8 m)
Longest span63 ft (19.2 m)
Deck width24 ft (7.3 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$204,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Freight RD over Post Creek 053 built?

It was built in 2016, making it 9 years old in 2025.

What condition is Old Freight RD over Post Creek 053 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 March 2024.

How much traffic does Old Freight RD over Post Creek 053 carry?

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

How long is Old Freight RD over Post Creek 053?

The structure is 65 ft (19.8 m) long with a longest span of 63 ft (19.2 m) and a deck 24 ft wide.

Who owns Old Freight RD over Post Creek 053?

It is owned by the County Highway Agency.