US Bridges

CR5 (73rd Ave Sw) over Knife River

Fair

Mercer County, North Dakota · 9 South of Golden Valley · Structure no. 000000029107280

Built
1976
49 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
145 ft
3 main spans
Daily traffic
45
2018 count
Owner
County
County Highway Agency

About this bridge

CR5 (73rd Ave Sw) over Knife River is a prestressed concrete continuous box beam or girders - single or spread carrying CR5 (73rd Ave Sw) over Knife River in Mercer County, North Dakota. It was built in 1976, so it is 49 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 45 vehicles a day, projected to reach 35 by 2038. The structure is 145 ft (44.2 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesCR5 (73rd Ave Sw)
CrossesKnife River
Location9 South of Golden Valley
RouteCounty Highway 2905
CountyMercer County
StateNorth Dakota
Coordinates47.15367, -102.06048
Functional classRural Major 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.1 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length145 ft (44.2 m)
Longest span46 ft (14 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2018)
Projected traffic35 by 2038
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 CR5 (73rd Ave Sw) over Knife River built?

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

What condition is CR5 (73rd Ave Sw) over Knife 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 July 2024.

How much traffic does CR5 (73rd Ave Sw) over Knife River carry?

About 45 vehicles per day (2018 count).

How long is CR5 (73rd Ave Sw) over Knife River?

The structure is 145 ft (44.2 m) long with a longest span of 46 ft (14 m) and a deck 32 ft wide.

Who owns CR5 (73rd Ave Sw) over Knife River?

It is owned by the County Highway Agency.