US Bridges

Mn 73 over Joula Creek

Poor

St. Louis County, Minnesota · 9.4 MI N of N JCT TH 2 · Structure no. 6740

Built
1950
75 years old
Condition
Poor
inspected September 2024
Type
Culvert
Concrete
Length
40 ft
3 main spans
Daily traffic
570
2017 count
Owner
State
State Highway Agency

About this bridge

Mn 73 over Joula Creek is a concrete culvert carrying Mn 73 over Joula Creek in St. Louis County, Minnesota. It was built in 1950, so it is 75 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 570 vehicles a day, roughly 2% of them trucks, projected to reach 570 by 2037. The structure is 40 ft (12.2 m) long. If it were closed, the detour would be 24.9 mi (40 km).

CarriesMn 73
CrossesJoula Creek
Location9.4 MI N of N JCT TH 2
RouteState Highway 73
Coordinates47.04983, -92.94709
Functional classRural Minor Arterial

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
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating32.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic570 (2017)
Projected traffic570 by 2037
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 km)
TollOn a free road
National Highway SystemNo

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$109 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 73 over Joula Creek built?

It was built in 1950, making it 75 years old in 2025.

What condition is Mn 73 over Joula Creek 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 September 2024.

How much traffic does Mn 73 over Joula Creek carry?

About 570 vehicles per day (2017 count), of which roughly 2% are trucks.

How long is Mn 73 over Joula Creek?

The structure is 40 ft (12.2 m) long with a longest span of 14 ft (4.3 m).

Who owns Mn 73 over Joula Creek?

It is owned by the State Highway Agency.