US Bridges

Csah 66 over Daggett Brook

Fair

Crow Wing County, Minnesota · 0.9 MI N of JCT Csah 3 · Structure no. 18510

Built
1979
46 years old
Condition
Fair
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
184 ft
3 main spans
Daily traffic
5,900
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 66 over Daggett Brook is a prestressed concrete tee beam carrying Csah 66 over Daggett Brook in Crow Wing County, Minnesota. It was built in 1979, so it is 46 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 5,900 vehicles a day, projected to reach 5,400 by 2039. The structure is 184 ft (56.2 m) long and 56 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCsah 66
CrossesDaggett Brook
Location0.9 MI N of JCT Csah 3
RouteCounty Highway 66
CountyCrow Wing County
StateMinnesota
Coordinates46.68288, -94.1115
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating75.9 US tons
Inventory rating45.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length184 ft (56.2 m)
Longest span70 ft (21.3 m)
Deck width56 ft (17.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,900 (2019)
Projected traffic5,400 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$600 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 66 over Daggett Brook built?

It was built in 1979, making it 46 years old in 2025.

What condition is Csah 66 over Daggett 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 November 2023.

How much traffic does Csah 66 over Daggett Brook carry?

About 5,900 vehicles per day (2019 count).

How long is Csah 66 over Daggett Brook?

The structure is 184 ft (56.2 m) long with a longest span of 70 ft (21.3 m) and a deck 56 ft wide.

Who owns Csah 66 over Daggett Brook?

It is owned by the County Highway Agency.