US Bridges

Monforton Sch RD over Hyalite Creek 093

Good

Gallatin County, Montana · 4M W Bozeman · Structure no. L16720000+01001

Built
2014
11 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Monforton Sch RD over Hyalite Creek 093 is a steel stringer/multi-beam or girder carrying Monforton Sch RD over Hyalite Creek 093 in Gallatin County, Montana. It was built in 2014, so it is 11 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 35 ft (10.7 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesMonforton Sch RD
CrossesHyalite Creek 093
Location4M W Bozeman
RouteCounty Highway 720
StateMontana
Coordinates45.67287, -111.16997
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 protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.2 US tons
Inventory rating37.1 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span34 ft (10.4 m)
Deck width24 ft (7.4 m)
Roadway width24 ft (7.4 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 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 Monforton Sch RD over Hyalite Creek 093 built?

It was built in 2014, making it 11 years old in 2025.

What condition is Monforton Sch RD over Hyalite Creek 093 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 Monforton Sch RD over Hyalite Creek 093 carry?

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

How long is Monforton Sch RD over Hyalite Creek 093?

The structure is 35 ft (10.7 m) long with a longest span of 34 ft (10.4 m) and a deck 24 ft wide.

Who owns Monforton Sch RD over Hyalite Creek 093?

It is owned by the County Highway Agency.