US Bridges

Lehigh Drive over Heart River

FairPosted for load

Stark County, North Dakota · 4 East 1 South Dickinson · Structure no. 000000045126100

Built
1910
115 years old
Condition
Fair
inspected September 2024
Type
Truss - Thru
Steel
Length
72 ft
1 main span
Daily traffic
50
2018 count
Owner
County
County Highway Agency

About this bridge

Lehigh Drive over Heart River is a steel truss - thru carrying Lehigh Drive over Heart River in Stark County, North Dakota. It was built in 1910, so it is 115 years old, older than the North Dakota average of 48.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 50 vehicles a day, projected to reach 50 by 2038. The structure is 72 ft (21.9 m) long and 18 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesLehigh Drive
CrossesHeart River
Location4 East 1 South Dickinson
RouteCounty Highway 0
CountyStark County
StateNorth Dakota
Coordinates46.86904, -102.69572
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating11.8 US tons
Inventory rating7.2 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length72 ft (21.9 m)
Longest span70 ft (21.3 m)
Deck width18 ft (5.6 m)
Roadway width17 ft (5.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2018)
Projected traffic50 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusListed on the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$270,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Lehigh Drive over Heart River built?

It was built in 1910, making it 115 years old in 2025.

What condition is Lehigh Drive over Heart River 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 September 2024.

How much traffic does Lehigh Drive over Heart River carry?

About 50 vehicles per day (2018 count).

How long is Lehigh Drive over Heart River?

The structure is 72 ft (21.9 m) long with a longest span of 70 ft (21.3 m) and a deck 18 ft wide.

Who owns Lehigh Drive over Heart River?

It is owned by the County Highway Agency.