US Bridges

County Highway over I-29/LAMARS Interchange

Fair

Richland County, North Dakota · 2 North of Sd Border · Structure no. 0029002074

Built
1974
51 years old, rebuilt 2009
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
235 ft
2 main spans
Daily traffic
60
2019 count
Owner
State
State Highway Agency

About this bridge

County Highway over I-29/LAMARS Interchange is a steel continuous stringer/multi-beam or girder carrying County Highway over I-29/LAMARS Interchange in Richland County, North Dakota. It was built in 1974 and reconstructed in 2009, so it is 51 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 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 60 vehicles a day, projected to reach 60 by 2039. The structure is 235 ft (71.6 m) long and 33 ft wide.

Location

Open in Google Maps
CarriesCounty Highway
CrossesI-29/LAMARS Interchange
Location2 North of Sd Border
RouteCounty Highway 0
CountyRichland County
StateNorth Dakota
Coordinates45.96478, -96.83607
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating54.1 US tons
Inventory rating32.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length235 ft (71.6 m)
Longest span118 ft (36 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2019)
Projected traffic60 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was County Highway over I-29/LAMARS Interchange built?

It was built in 1974, making it 51 years old in 2025. It was reconstructed in 2009.

What condition is County Highway over I-29/LAMARS Interchange 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 May 2024.

How much traffic does County Highway over I-29/LAMARS Interchange carry?

About 60 vehicles per day (2019 count).

How long is County Highway over I-29/LAMARS Interchange?

The structure is 235 ft (71.6 m) long with a longest span of 118 ft (36 m) and a deck 33 ft wide.

Who owns County Highway over I-29/LAMARS Interchange?

It is owned by the State Highway Agency.