US Bridges

Law Enforcement RD over Prickely Pear Creek

FairPosted for load

Lewis and Clark County, Montana · 5M NE Helena · Structure no. 000000202008015

Built
1940
85 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
52 ft
2 main spans
Daily traffic
100
2025 count
Owner
State
Other State Agency

About this bridge

Law Enforcement RD over Prickely Pear Creek is a wood or timber stringer/multi-beam or girder carrying Law Enforcement RD over Prickely Pear Creek in Lewis and Clark County, Montana. It was built in 1940, so it is 85 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. Its operating status is: posted for load restriction.

It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 52 ft (15.8 m) long and 18 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLaw Enforcement RD
CrossesPrickely Pear Creek
Location5M NE Helena
RouteCounty Highway 0
StateMontana
Coordinates46.66271, -111.97651
Functional classRural Local

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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating38 US tons
Inventory rating36 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadUnknown
Structure length52 ft (15.8 m)
Longest span25 ft (7.6 m)
Deck width18 ft (5.6 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther State Agency
Maintained byOther State Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Law Enforcement RD over Prickely Pear Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is Law Enforcement RD over Prickely Pear Creek 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 October 2024.

How much traffic does Law Enforcement RD over Prickely Pear Creek carry?

About 100 vehicles per day (2025 count), of which roughly 3% are trucks.

How long is Law Enforcement RD over Prickely Pear Creek?

The structure is 52 ft (15.8 m) long with a longest span of 25 ft (7.6 m) and a deck 18 ft wide.

Who owns Law Enforcement RD over Prickely Pear Creek?

It is owned by the Other State Agency.