US Bridges

Interstate 29 over ND297/DEMERS Ave Int-Gf

Fair

Grand Forks County, North Dakota · 1 South US 2 · Structure no. 0029140195 R

Built
1968
57 years old, rebuilt 2009
Condition
Fair
inspected April 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
285 ft
4 main spans
Daily traffic
8,200
2019 count
Owner
State
State Highway Agency

About this bridge

Interstate 29 over ND297/DEMERS Ave Int-Gf is a prestressed concrete continuous box beam or girders - single or spread carrying Interstate 29 over ND297/DEMERS Ave Int-Gf in Grand Forks County, North Dakota. It was built in 1968 and reconstructed in 2009, so it is 57 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.

It carries about 8,200 vehicles a day, roughly 15% of them trucks, projected to reach 8,200 by 2039. The structure is 285 ft (86.9 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesInterstate 29
CrossesND297/DEMERS Ave Int-Gf
Location1 South US 2
RouteInterstate 29
CountyGrand Forks County
StateNorth Dakota
Coordinates47.91854, -97.09331
Functional classUrban Principal Arterial - Interstate

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating85.2 US tons
Inventory rating43.9 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length285 ft (86.9 m)
Longest span70 ft (21.3 m)
Deck width50 ft (15.2 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,200 (2019)
Projected traffic8,200 by 2039
Trucks15%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 Interstate 29 over ND297/DEMERS Ave Int-Gf built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2009.

What condition is Interstate 29 over ND297/DEMERS Ave Int-Gf 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 April 2023.

How much traffic does Interstate 29 over ND297/DEMERS Ave Int-Gf carry?

About 8,200 vehicles per day (2019 count), of which roughly 15% are trucks.

How long is Interstate 29 over ND297/DEMERS Ave Int-Gf?

The structure is 285 ft (86.9 m) long with a longest span of 70 ft (21.3 m) and a deck 50 ft wide.

Who owns Interstate 29 over ND297/DEMERS Ave Int-Gf?

It is owned by the State Highway Agency.