US Bridges

Frontage Road 018 over Drainage 009

Poor

Treasure County, Montana · 4M E Hysham · Structure no. L52086003+04001

Built
1933
92 years old, rebuilt 1955
Condition
Poor
inspected September 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
58 ft
3 main spans
Daily traffic
219
2023 count
Owner
State
State Highway Agency

About this bridge

Frontage Road 018 over Drainage 009 is a wood or timber stringer/multi-beam or girder carrying Frontage Road 018 over Drainage 009 in Treasure County, Montana. It was built in 1933 and reconstructed in 1955, so it is 92 years old, older than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 219 vehicles a day, roughly 16% of them trucks, projected to reach 230 by 2043. The structure is 58 ft (17.7 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesFrontage Road 018
CrossesDrainage 009
Location4M E Hysham
RouteState Highway 81018
StateMontana
Coordinates46.29398, -107.15672
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42 US tons
Inventory rating28 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadH 15
Structure length58 ft (17.7 m)
Longest span19 ft (5.8 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic219 (2023)
Projected traffic230 by 2043
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Frontage Road 018 over Drainage 009 built?

It was built in 1933, making it 92 years old in 2025. It was reconstructed in 1955.

What condition is Frontage Road 018 over Drainage 009 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2023.

How much traffic does Frontage Road 018 over Drainage 009 carry?

About 219 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is Frontage Road 018 over Drainage 009?

The structure is 58 ft (17.7 m) long with a longest span of 19 ft (5.8 m) and a deck 28 ft wide.

Who owns Frontage Road 018 over Drainage 009?

It is owned by the State Highway Agency.