US Bridges

Msas 129 over Red River of the North

Fair

Clay County, Minnesota · 0.5 MI W of JCT Csah 3 · Structure no. 14523

Built
1988
37 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Prestressed Concrete
Length
500 ft
5 main spans
Daily traffic
8,133
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Msas 129 over Red River of the North is a prestressed concrete tee beam carrying Msas 129 over Red River of the North in Clay County, Minnesota. It was built in 1988, so it is 37 years old, younger than the Minnesota average of 38.5 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 8,133 vehicles a day, roughly 2% of them trucks, projected to reach 8,800 by 2041. The structure is 500 ft (152.4 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMsas 129
CrossesRed River of the North
Location0.5 MI W of JCT Csah 3
RouteCity Street 129
Coordinates46.88978, -96.77422
Functional classUrban 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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating54.3 US tons
Inventory rating32.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length500 ft (152.4 m)
Longest span100 ft (30.5 m)
Deck width40 ft (12.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,133 (2021)
Projected traffic8,800 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$1,000 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Msas 129 over Red River of the North built?

It was built in 1988, making it 37 years old in 2025.

What condition is Msas 129 over Red River of the North 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 Msas 129 over Red River of the North carry?

About 8,133 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Msas 129 over Red River of the North?

The structure is 500 ft (152.4 m) long with a longest span of 100 ft (30.5 m) and a deck 40 ft wide.

Who owns Msas 129 over Red River of the North?

It is owned by the City or Municipal Highway Agency.