US Bridges

Sugar Ave over Sep I 90 011

Good

Yellowstone County, Montana · Billings · Structure no. L56395002+04001

Built
1966
59 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
306 ft
5 main spans
Daily traffic
3,071
2023 count
Owner
State
State Highway Agency

About this bridge

Sugar Ave over Sep I 90 011 is a prestressed concrete stringer/multi-beam or girder carrying Sugar Ave over Sep I 90 011 in Yellowstone County, Montana. It was built in 1966, so it is 59 years old, older 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 3,071 vehicles a day, roughly 3% of them trucks, projected to reach 3,271 by 2043. The structure is 306 ft (93.2 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSugar Ave
CrossesSep I 90 011
LocationBillings
RouteState Highway 56395
StateMontana
Coordinates45.75744, -108.49429
Functional classUrban 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.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48 US tons
Inventory rating29 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length306 ft (93.2 m)
Longest span72 ft (21.9 m)
Deck width36 ft (11.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,071 (2023)
Projected traffic3,271 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sugar Ave over Sep I 90 011 built?

It was built in 1966, making it 59 years old in 2025.

What condition is Sugar Ave over Sep I 90 011 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 April 2023.

How much traffic does Sugar Ave over Sep I 90 011 carry?

About 3,071 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Sugar Ave over Sep I 90 011?

The structure is 306 ft (93.2 m) long with a longest span of 72 ft (21.9 m) and a deck 36 ft wide.

Who owns Sugar Ave over Sep I 90 011?

It is owned by the State Highway Agency.