US Bridges

S 16 over Clover Creek-Rr

Fair

Roosevelt County, Montana · Culbertson · Structure no. P00062001+05171

Built
1957
68 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
268 ft
4 main spans
Daily traffic
1,136
2023 count
Owner
State
State Highway Agency

About this bridge

S 16 over Clover Creek-Rr is a steel continuous stringer/multi-beam or girder carrying S 16 over Clover Creek-Rr in Roosevelt County, Montana. It was built in 1957, so it is 68 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 1,136 vehicles a day, roughly 30% of them trucks, projected to reach 1,312 by 2043. The structure is 268 ft (81.7 m) long and 32 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesS 16
CrossesClover Creek-Rr
LocationCulbertson
RouteState Highway 16
CountyRoosevelt County
StateMontana
Coordinates48.14484, -104.50599
Functional classRural Principal Arterial - Other

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating55 US tons
Inventory rating39 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length268 ft (81.7 m)
Longest span73 ft (22.3 m)
Deck width32 ft (9.7 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,136 (2023)
Projected traffic1,312 by 2043
Trucks30%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed123.7 mi (199 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$762,000
NavigationNo navigation control on waterway

Frequently asked questions

When was S 16 over Clover Creek-Rr built?

It was built in 1957, making it 68 years old in 2025.

What condition is S 16 over Clover Creek-Rr 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 May 2023.

How much traffic does S 16 over Clover Creek-Rr carry?

About 1,136 vehicles per day (2023 count), of which roughly 30% are trucks.

How long is S 16 over Clover Creek-Rr?

The structure is 268 ft (81.7 m) long with a longest span of 73 ft (22.3 m) and a deck 32 ft wide.

Who owns S 16 over Clover Creek-Rr?

It is owned by the State Highway Agency.