US Bridges

T 22 over Rock River

Fair

Pipestone County, Minnesota · 0.1 MI W of JCT Csah 17 · Structure no. 59521

Built
1993
32 years old
Condition
Fair
inspected October 2024
Type
Slab
Wood or Timber
Length
95 ft
3 main spans
Daily traffic
26
1993 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

T 22 over Rock River is a wood or timber slab carrying T 22 over Rock River in Pipestone County, Minnesota. It was built in 1993, so it is 32 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 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 26 vehicles a day, projected to reach 26 by 2029. The structure is 95 ft (29 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesT 22
CrossesRock River
Location0.1 MI W of JCT Csah 17
RouteCounty Highway 22
CountyPipestone County
StateMinnesota
Coordinates43.95016, -96.14673
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.3 US tons
Inventory rating36.7 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckConcrete, precast panels
Main spans3
Design loadHS 25 or greater
Structure length95 ft (29 m)
Longest span31 ft (9.6 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26 (1993)
Projected traffic26 by 2029
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$650 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was T 22 over Rock River built?

It was built in 1993, making it 32 years old in 2025.

What condition is T 22 over Rock River 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 October 2024.

How much traffic does T 22 over Rock River carry?

About 26 vehicles per day (1993 count).

How long is T 22 over Rock River?

The structure is 95 ft (29 m) long with a longest span of 31 ft (9.6 m) and a deck 30 ft wide.

Who owns T 22 over Rock River?

It is owned by the Town or Township Highway Agency.