US Bridges

Henderson Creek Ro over Flint Creek 035

Good

Granite County, Montana · 11M S Drummond · Structure no. L20028000+05001

Built
2013
12 years old
Condition
Good
inspected July 2024
Type
Tee Beam
Prestressed Concrete
Length
87 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Henderson Creek Ro over Flint Creek 035 is a prestressed concrete tee beam carrying Henderson Creek Ro over Flint Creek 035 in Granite County, Montana. It was built in 2013, so it is 12 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 87 ft (26.5 m) long and 26 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesHenderson Creek Ro
CrossesFlint Creek 035
Location11M S Drummond
RouteCounty Highway 20022
StateMontana
Coordinates46.50512, -113.23472
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating41 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length87 ft (26.5 m)
Longest span82 ft (25 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 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 closed19.9 mi (32 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 Henderson Creek Ro over Flint Creek 035 built?

It was built in 2013, making it 12 years old in 2025.

What condition is Henderson Creek Ro over Flint Creek 035 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 July 2024.

How much traffic does Henderson Creek Ro over Flint Creek 035 carry?

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

How long is Henderson Creek Ro over Flint Creek 035?

The structure is 87 ft (26.5 m) long with a longest span of 82 ft (25 m) and a deck 26 ft wide.

Who owns Henderson Creek Ro over Flint Creek 035?

It is owned by the County Highway Agency.