US Bridges

I 35W over NB Ramp; TH280 SB

Fair

Ramsey County, Minnesota · At JCT TH 280; 35W · Structure no. 62860

Built
1970
55 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
210 ft
2 main spans
Daily traffic
102,686
2022 count
Owner
State
State Highway Agency

About this bridge

I 35W over NB Ramp; TH280 SB is a prestressed concrete stringer/multi-beam or girder carrying I 35W over NB Ramp; TH280 SB in Ramsey County, Minnesota. It was built in 1970, so it is 55 years old, older 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 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 102,686 vehicles a day, roughly 4% of them trucks, projected to reach 116,000 by 2042. The structure is 210 ft (64 m) long and 134 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesI 35W
CrossesNB Ramp; TH280 SB
LocationAt JCT TH 280; 35W
RouteInterstate 35W
CountyRamsey County
StateMinnesota
Coordinates45.00786, -93.20453
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
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 alignment8: Equal to present desirable criteria
Operating rating85.3 US tons
Inventory rating24.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length210 ft (64 m)
Longest span101 ft (30.9 m)
Deck width134 ft (40.9 m)
Roadway width125 ft (38.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic102,686 (2022)
Projected traffic116,000 by 2042
Trucks4%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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 I 35W over NB Ramp; TH280 SB built?

It was built in 1970, making it 55 years old in 2025.

What condition is I 35W over NB Ramp; TH280 SB 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 2024.

How much traffic does I 35W over NB Ramp; TH280 SB carry?

About 102,686 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is I 35W over NB Ramp; TH280 SB?

The structure is 210 ft (64 m) long with a longest span of 101 ft (30.9 m) and a deck 134 ft wide.

Who owns I 35W over NB Ramp; TH280 SB?

It is owned by the State Highway Agency.