US Bridges

S 249-VARNEY RD over Blaine Spring Creek

Good

Madison County, Montana · 8M S Ennis · Structure no. 000000000006491

Built
2016
9 years old
Condition
Good
inspected June 2024
Type
Truss - Thru
Steel
Length
130 ft
1 main span
Daily traffic
449
2023 count
Owner
County
County Highway Agency

About this bridge

S 249-VARNEY RD over Blaine Spring Creek is a steel truss - thru carrying S 249-VARNEY RD over Blaine Spring Creek in Madison 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 449 vehicles a day, roughly 5% of them trucks, projected to reach 471 by 2043. The structure is 130 ft (39.6 m) long and 31 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesS 249-VARNEY RD
CrossesBlaine Spring Creek
Location8M S Ennis
RouteCounty Highway 249
CountyMadison County
StateMontana
Coordinates45.23247, -111.75731
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being 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 rating34 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length130 ft (39.6 m)
Longest span130 ft (39.6 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic449 (2023)
Projected traffic471 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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 S 249-VARNEY RD over Blaine Spring Creek built?

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

What condition is S 249-VARNEY RD over Blaine Spring 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 June 2024.

How much traffic does S 249-VARNEY RD over Blaine Spring Creek carry?

About 449 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S 249-VARNEY RD over Blaine Spring Creek?

The structure is 130 ft (39.6 m) long with a longest span of 130 ft (39.6 m) and a deck 31 ft wide.

Who owns S 249-VARNEY RD over Blaine Spring Creek?

It is owned by the County Highway Agency.