US Bridges

Mn 280 over NB on Ramp; TH 280 SB

Poor

Ramsey County, Minnesota · At JCT TH 94; 280 · Structure no. 62844

Built
1967
58 years old
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
272 ft
2 main spans
Daily traffic
22,391
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 280 over NB on Ramp; TH 280 SB is a steel continuous stringer/multi-beam or girder carrying Mn 280 over NB on Ramp; TH 280 SB in Ramsey County, Minnesota. It was built in 1967, so it is 58 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 22,391 vehicles a day, roughly 6% of them trucks, projected to reach 24,250 by 2042. The structure is 272 ft (82.9 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMn 280
CrossesNB on Ramp; TH 280 SB
LocationAt JCT TH 94; 280
RouteState Highway 280
CountyRamsey County
StateMinnesota
Coordinates44.96241, -93.20184
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.4 US tons
Inventory rating41.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length272 ft (82.9 m)
Longest span128 ft (39.1 m)
Deck width34 ft (10.3 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,391 (2022)
Projected traffic24,250 by 2042
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 Mn 280 over NB on Ramp; TH 280 SB built?

It was built in 1967, making it 58 years old in 2025.

What condition is Mn 280 over NB on Ramp; TH 280 SB in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

How much traffic does Mn 280 over NB on Ramp; TH 280 SB carry?

About 22,391 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is Mn 280 over NB on Ramp; TH 280 SB?

The structure is 272 ft (82.9 m) long with a longest span of 128 ft (39.1 m) and a deck 34 ft wide.

Who owns Mn 280 over NB on Ramp; TH 280 SB?

It is owned by the State Highway Agency.