US Bridges

Lower RD over Wolf Creek 086

Fair

Fergus County, Montana · 5M SW Denton · Structure no. L14310004+08001

Built
1962
63 years old
Condition
Fair
inspected July 2023
Type
Slab
Prestressed Concrete
Length
31 ft
1 main span
Daily traffic
73
2023 count
Owner
County
County Highway Agency

About this bridge

Lower RD over Wolf Creek 086 is a prestressed concrete slab carrying Lower RD over Wolf Creek 086 in Fergus County, Montana. It was built in 1962, so it is 63 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 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 73 vehicles a day, roughly 3% of them trucks, projected to reach 77 by 2043. The structure is 31 ft (9.4 m) long and 23 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesLower RD
CrossesWolf Creek 086
Location5M SW Denton
RouteCounty Highway 14310
CountyFergus County
StateMontana
Coordinates47.3012, -110.04976
Functional classRural Minor 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.1 US tons
Inventory rating26.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span29 ft (8.8 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic73 (2023)
Projected traffic77 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Lower RD over Wolf Creek 086 built?

It was built in 1962, making it 63 years old in 2025.

What condition is Lower RD over Wolf Creek 086 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 July 2023.

How much traffic does Lower RD over Wolf Creek 086 carry?

About 73 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Lower RD over Wolf Creek 086?

The structure is 31 ft (9.4 m) long with a longest span of 29 ft (8.8 m) and a deck 23 ft wide.

Who owns Lower RD over Wolf Creek 086?

It is owned by the County Highway Agency.