US Bridges

Business RTE 90 over Yellowstone River

Fair

Park County, Montana · NE Livingston · Structure no. P00011055+09401

Built
2013
12 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
642 ft
4 main spans
Daily traffic
5,141
2023 count
Owner
State
State Highway Agency

About this bridge

Business RTE 90 over Yellowstone River is a steel continuous stringer/multi-beam or girder carrying Business RTE 90 over Yellowstone River in Park 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 5,141 vehicles a day, roughly 2% of them trucks, projected to reach 5,398 by 2043. The structure is 642 ft (195.6 m) long and 54 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesBusiness RTE 90
CrossesYellowstone River
LocationNE Livingston
RouteU.S. Route 89
CountyPark County
StateMontana
Coordinates45.67481, -110.53697
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length642 ft (195.6 m)
Longest span178 ft (54.3 m)
Deck width54 ft (16.6 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,141 (2023)
Projected traffic5,398 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Business RTE 90 over Yellowstone River built?

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

What condition is Business RTE 90 over Yellowstone River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does Business RTE 90 over Yellowstone River carry?

About 5,141 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Business RTE 90 over Yellowstone River?

The structure is 642 ft (195.6 m) long with a longest span of 178 ft (54.3 m) and a deck 54 ft wide.

Who owns Business RTE 90 over Yellowstone River?

It is owned by the State Highway Agency.