US Bridges

Lombard RD over Broadwater Missouri 018

Fair

Broadwater County, Montana · 1M SE Toston · Structure no. L04401001+09001

Built
1976
49 years old
Condition
Fair
inspected November 2023
Type
Channel Beam
Prestressed Concrete
Length
24 ft
1 main span
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Lombard RD over Broadwater Missouri 018 is a prestressed concrete channel beam carrying Lombard RD over Broadwater Missouri 018 in Broadwater County, Montana. It was built in 1976, so it is 49 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 24 ft (7.3 m) long and 23 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesLombard RD
CrossesBroadwater Missouri 018
Location1M SE Toston
RouteCounty Highway 4401
StateMontana
Coordinates46.15941, -111.43355
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 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 alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating44 US tons
Inventory rating36 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width23 ft (6.9 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
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 Lombard RD over Broadwater Missouri 018 built?

It was built in 1976, making it 49 years old in 2025.

What condition is Lombard RD over Broadwater Missouri 018 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 November 2023.

How much traffic does Lombard RD over Broadwater Missouri 018 carry?

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

How long is Lombard RD over Broadwater Missouri 018?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 23 ft wide.

Who owns Lombard RD over Broadwater Missouri 018?

It is owned by the County Highway Agency.