US Bridges

Mn 27 over Gillespie Brook

Fair

Carlton County, Minnesota · 4.7 MI W of E JCT TH 73 · Structure no. 09013

Built
2004
21 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
47 ft
1 main span
Daily traffic
1,470
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 27 over Gillespie Brook is a prestressed concrete stringer/multi-beam or girder carrying Mn 27 over Gillespie Brook in Carlton County, Minnesota. It was built in 2004, so it is 21 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 1,470 vehicles a day, roughly 12% of them trucks, projected to reach 2,250 by 2042. The structure is 47 ft (14.3 m) long and 47 ft wide. If it were closed, the detour would be 13 mi (21 km).

Location

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CarriesMn 27
CrossesGillespie Brook
Location4.7 MI W of E JCT TH 73
RouteState Highway 27
CountyCarlton County
StateMinnesota
Coordinates46.45526, -92.86011
Functional classRural Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating83.4 US tons
Inventory rating41.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length47 ft (14.3 m)
Longest span44 ft (13.4 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,470 (2022)
Projected traffic2,250 by 2042
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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$1,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 27 over Gillespie Brook built?

It was built in 2004, making it 21 years old in 2025.

What condition is Mn 27 over Gillespie Brook 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 Mn 27 over Gillespie Brook carry?

About 1,470 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is Mn 27 over Gillespie Brook?

The structure is 47 ft (14.3 m) long with a longest span of 44 ft (13.4 m) and a deck 47 ft wide.

Who owns Mn 27 over Gillespie Brook?

It is owned by the State Highway Agency.