US Bridges

T 284 over Trib Rock River

Good

Pipestone County, Minnesota · 0.8 MI S of JCT Csah 7 · Structure no. 59J84

Built
2015
10 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
36
2014 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 284 over Trib Rock River is a concrete culvert carrying T 284 over Trib Rock River in Pipestone County, Minnesota. It was built in 2015, so it is 10 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 36 vehicles a day, projected to reach 44 by 2034. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesT 284
CrossesTrib Rock River
Location0.8 MI S of JCT Csah 7
RouteCounty Highway 284
Coordinates44.05513, -96.1447
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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
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 rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length26 ft (7.9 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 traffic36 (2014)
Projected traffic44 by 2034
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 284 over Trib Rock River built?

It was built in 2015, making it 10 years old in 2025.

What condition is T 284 over Trib Rock River 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 June 2024.

How much traffic does T 284 over Trib Rock River carry?

About 36 vehicles per day (2014 count).

How long is T 284 over Trib Rock River?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m).

Who owns T 284 over Trib Rock River?

It is owned by the Town or Township Highway Agency.