US Bridges

T 123 over Stony Brook

Good

Mille Lacs County, Minnesota · 0.7 MI N of JCT CR 106 · Structure no. 48J04

Built
1997
28 years old
Condition
Good
inspected September 2022
Type
Culvert
Concrete
Length
32 ft
2 main spans
Daily traffic
21
1996 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 123 over Stony Brook is a concrete culvert carrying T 123 over Stony Brook in Mille Lacs County, Minnesota. It was built in 1997, so it is 28 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 21 vehicles a day, projected to reach 21 by 2029. The structure is 32 ft (9.9 m) long. If it were closed, the detour would be 6.2 mi (10 km).

CarriesT 123
CrossesStony Brook
Location0.7 MI N of JCT CR 106
RouteCounty Highway 123
Coordinates45.78877, -93.76239
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.8 US tons
Inventory rating43.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length32 ft (9.9 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21 (1996)
Projected traffic21 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was T 123 over Stony Brook built?

It was built in 1997, making it 28 years old in 2025.

What condition is T 123 over Stony Brook in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2022.

How much traffic does T 123 over Stony Brook carry?

About 21 vehicles per day (1996 count).

How long is T 123 over Stony Brook?

The structure is 32 ft (9.9 m) long with a longest span of 12 ft (3.7 m).

Who owns T 123 over Stony Brook?

It is owned by the Town or Township Highway Agency.