US Bridges

S 540 - E River RD over Yellowstone River

Fair

Park County, Montana · 4M S Livingston · Structure no. S00540031+06621

Built
1921
104 years old, rebuilt 1958
Condition
Fair
inspected August 2024
Type
Arch - Deck
Concrete
Length
285 ft
3 main spans
Daily traffic
1,160
2023 count
Owner
State
State Highway Agency

About this bridge

S 540 - E River RD over Yellowstone River is a concrete arch - deck carrying S 540 - E River RD over Yellowstone River in Park County, Montana. It was built in 1921 and reconstructed in 1958, so it is 104 years old, older 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 5 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 1,160 vehicles a day, projected to reach 1,218 by 2043. The structure is 285 ft (86.8 m) long and 25 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesS 540 - E River RD
CrossesYellowstone River
Location4M S Livingston
RouteState Highway 540
CountyPark County
StateMontana
Coordinates45.59698, -110.5667
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61 US tons
Inventory rating37 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length285 ft (86.8 m)
Longest span94 ft (28.6 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,160 (2023)
Projected traffic1,218 by 2043
Trucks0%
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S 540 - E River RD over Yellowstone River built?

It was built in 1921, making it 104 years old in 2025. It was reconstructed in 1958.

What condition is S 540 - E River RD 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 S 540 - E River RD over Yellowstone River carry?

About 1,160 vehicles per day (2023 count).

How long is S 540 - E River RD over Yellowstone River?

The structure is 285 ft (86.8 m) long with a longest span of 94 ft (28.6 m) and a deck 25 ft wide.

Who owns S 540 - E River RD over Yellowstone River?

It is owned by the State Highway Agency.