US Bridges

RD 228 over Bristow CR

Good

Lincoln County, Montana · Bristow Creek · Structure no. 011406000000020

Built
1969
56 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
104 ft
3 main spans
Daily traffic
99
Owner
Federal
U.S. Forest Service

About this bridge

RD 228 over Bristow CR is a prestressed concrete stringer/multi-beam or girder carrying RD 228 over Bristow CR in Lincoln County, Montana. It was built in 1969, so it is 56 years old, older than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 99 vehicles a day, projected to reach 148 by 2045. The structure is 104 ft (31.7 m) long and 32 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesRD 228
CrossesBristow CR
LocationBristow Creek
RouteFederal Lands Road 228
StateMontana
Coordinates48.54595, -115.28875
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length104 ft (31.7 m)
Longest span33 ft (10.1 m)
Deck width32 ft (9.8 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic99 (—)
Projected traffic148 by 2045
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was RD 228 over Bristow CR built?

It was built in 1969, making it 56 years old in 2025.

What condition is RD 228 over Bristow CR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does RD 228 over Bristow CR carry?

About 99 vehicles per day (latest count).

How long is RD 228 over Bristow CR?

The structure is 104 ft (31.7 m) long with a longest span of 33 ft (10.1 m) and a deck 32 ft wide.

Who owns RD 228 over Bristow CR?

It is owned by the U.S. Forest Service.