US Bridges

Jack Creek RD over Jack Creek 030

Good

Madison County, Montana · 7M E Ennis · Structure no. L29122021+06001

Built
2011
14 years old
Condition
Good
inspected September 2023
Type
Slab
Concrete
Length
28 ft
1 main span
Daily traffic
301
2023 count
Owner
County
County Highway Agency

About this bridge

Jack Creek RD over Jack Creek 030 is a concrete slab carrying Jack Creek RD over Jack Creek 030 in Madison County, Montana. It was built in 2011, so it is 14 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 301 vehicles a day, roughly 3% of them trucks, projected to reach 322 by 2043. The structure is 28 ft (8.4 m) long and 35 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesJack Creek RD
CrossesJack Creek 030
Location7M E Ennis
RouteCounty Highway 29202
StateMontana
Coordinates45.35647, -111.586
Functional classRural Minor Collector

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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating87.2 US tons
Inventory rating67.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length28 ft (8.4 m)
Longest span26 ft (7.9 m)
Deck width35 ft (10.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic301 (2023)
Projected traffic322 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 Jack Creek RD over Jack Creek 030 built?

It was built in 2011, making it 14 years old in 2025.

What condition is Jack Creek RD over Jack Creek 030 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 September 2023.

How much traffic does Jack Creek RD over Jack Creek 030 carry?

About 301 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Jack Creek RD over Jack Creek 030?

The structure is 28 ft (8.4 m) long with a longest span of 26 ft (7.9 m) and a deck 35 ft wide.

Who owns Jack Creek RD over Jack Creek 030?

It is owned by the County Highway Agency.