US Bridges

Rimini RD over Ten Mile Creek 105

Fair

Lewis and Clark County, Montana · 15M SW Helena · Structure no. L25606005+02001

Built
1981
44 years old
Condition
Fair
inspected August 2023
Type
Tee Beam
Prestressed Concrete
Length
70 ft
1 main span
Daily traffic
231
2023 count
Owner
County
County Highway Agency

About this bridge

Rimini RD over Ten Mile Creek 105 is a prestressed concrete tee beam carrying Rimini RD over Ten Mile Creek 105 in Lewis and Clark County, Montana. It was built in 1981, so it is 44 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 231 vehicles a day, roughly 3% of them trucks, projected to reach 244 by 2043. The structure is 70 ft (21.3 m) long and 27 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesRimini RD
CrossesTen Mile Creek 105
Location15M SW Helena
RouteCounty Highway 25606
StateMontana
Coordinates46.51385, -112.26164
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span68 ft (20.7 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic231 (2023)
Projected traffic244 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Rimini RD over Ten Mile Creek 105 built?

It was built in 1981, making it 44 years old in 2025.

What condition is Rimini RD over Ten Mile Creek 105 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 2023.

How much traffic does Rimini RD over Ten Mile Creek 105 carry?

About 231 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Rimini RD over Ten Mile Creek 105?

The structure is 70 ft (21.3 m) long with a longest span of 68 ft (20.7 m) and a deck 27 ft wide.

Who owns Rimini RD over Ten Mile Creek 105?

It is owned by the County Highway Agency.