# Old Pier Scour Inspection Management

Comments:
Assumed foundation; Dropped from program in 2018 - private owner


Comments:
Maintain regular inspection schedule every 5 years based on priority.


Comments:
Scour occurred in channel between Abutment 2 and Pier 2, and along the north guidebank.


Comments:
Dropped from program in 2018 - private owner


Comments:
No immediate concerns of pier scour. Potential scour developing near the RPW guidebank NW of bridge.


Comments:
TransAlta taking reponsibility for the structure.


Comments:
Shallow pipe pile penetration into hard bedrock.


Comments:
Remote site - consider other technique.  Assumed pile penetration.


Comments:
2.5m deep scour on east pier, minimum cover 2 m to the bottom of footing (2014)


Comments:
2.5m deep scour on east pier, minimum cover 2 m to the bottom of footing  (2014)


Comments:
Maintain scour priority 1 but reduce inspection frequency to every 10 years.


Comments:
Scour is not threatening right abutment at present


Comments:
2m deep scour on north pier (2013); Reduced inspection cycle to 5 years


Comments:
Approx. 0.8m deep scour holes at Pier 2 and 3 (2019); Reduced inspection cycle to 10 years.


Comments:
East bank erosion concerns. Recommends 5 years inspection frequency. The bridge is planned to be replaced in 2030.


Comments:
Scour below bottom of footing but  into hard sandstone or shale; some infilling in 2016


Comments:
Rock protection DD1387 was never placed.


Comments:
Scour hole at Pier 1 is below bottom of cap.


Comments:
Acrow bridge constructed in 2014, no apparent scour concerns.


Comments:
2013 - gabion wall damaged. Riprap placed around north pier 2018


Comments:
Major RPW repairs (2014); sheet piles/H-piles installed to ~1080m. Reduced inspection cycle due to RPWs


Comments:
Piers near bank, but TW from Peace River


Comments:
Constricted channel D/S. Scour and undermining concerns at Pier #3, increase priority to 1 and inspect every 3 years, refer to 2019 scour report for details.


Comments:
Salvage rail cars on piles driven to refusal.


Comments:
Scour 0.1 - 0.25 m above bottom of footings, likely in shale bedrock.


Comments:
Scour hole at center pier is 0.7 m above bottom of footing appears stable. Recommended to design erosion scour control to protect left abutment


Comments:
Pier 1 top of footing exposed, scour progressing into south channel bank.


Comments:
Drift removal at Pier 1/2/3. Monitor Pier 4 for potential drift accumulation.


Comments:
Railway bridge; used to carry vehicle traffic, no longer active.


Comments:
Riprap placed around piers (1982 design)


Comments:
According to latest pier scour report in 2017, this site should be inspected every 3 years, but since it was scheduled to be replaced in 2020, it was decided to remove from the pier scour program. The latest BIS report in 2019 mentioned that the bridge replacement schedule revised to 2023.


Comments:
Reduced inspection frequency to every 10 years.


Comments:
Scheduled for elimination; Rehab 2011 to extend life.


Comments:
Bed material in scour hole is clay. South headslope erosion should be repaired.


Comments:
Old railway bridge purchased by AT. Not in use.


Comments:
Piers recently rehabilitated in 2017, sufficient cover, no immediate concerns.


Comments:
Scour at Pier 3 only 0.9 m above footing bottom.  Bed material is clay. [New comment 03/05/2018 - Cover depth at Pier 3 increased to 1.8 meters]


Comments:
Scour hole developed on the upstream side at Pier 3, sufficient cover available, no concerns for now, recommend every 5 years inspection.


Comments:
Programmed for replacement 2021. Check in 2023.


Comments:
Scour just above bottom of footing at Pier 3. [New Comment 5/04/2018 - Redo Survey too much drift on Pier 3 for the last two surveys]


Comments:
Potential drift accumulation at Pier #2.


Comments:
scour hole noted 2016 - regional inspections to continue, spring 2018; increased priority


Comments:
Repaired the North Pier #4 and footing in 2014, larger footing and long piles.


Comments:
Programmed for replacement 2019 - delayed est 2021 replacement


Comments:
Because of priority, reduced inspection frequency to every 10 years.


Comments:
No scour concerns. Maintain 10 years inspection frequency


Comments:
Scour hole at Pier 3 is 0.4 m below bottom of footing.


Comments:
No footing information available. Because of priority, inspection frequency every 10 years to compare streambed changes.


Comments:
Town of Banff. No original drawings available, looks like piles into bedrock.


Comments:
2018 was the first year added to the program, recommend inspection every 5 years.


# Old RPW Inspection Management

Comments:
recommend adding riprap protection to protect the north guidebank.


Comments:
Channel meanders a lot in the past, recommend adding spurs and guidebank to align flow through the bridge.


Comments:
Channel meanders a lot in the past, drfts concern for this site, recommend removing drift pile.


Comments:
South headslope rebuilt after 2013 flood. Channel width between spurs is wider than typical channel, could be vulnerable to erosion.


Comments:
Channel meanders resulted in flow alignment towards the  south headslope.


Comments:
Channel constriction at bridge. Recommend adding riprap protection to the east headslope.


Comments:
Constriction at bridge opening due to gravel bed upstream. Recommend adding new spurs or extending spurs to reduce gravel bed.


Comments:
Recommend spur and extending riprap protection ot the south


Comments:
Channel constriction at the bridge opening. Road washout in 2005 flood event.


Comments:
East bank movement approx. 4 m/yr, recommend adding spurs to arrest erosion.


Comments:
Significant changes in channel formation since the 1999 flood event, replaced riprap after the 1999 flood appeared to be stable.


Comments:
Bank erosion at approx. 1 m/yr at the channel meandering just upstream of the bridge.


Comments:
Appeared bank movement at the upstream end of the guidebank. Recommend adding spurs to protect the guidebank.


Comments:
The channel had significant movement since 1986. At bridge opening, the bank appeared to be stable.


Comments:
Major shift in channel bank after 1996 flood event. Spurs and additional riprap protection appeared to be stable.


Comments:
The channel experienced some meandering near the highway, recommend adding RPW to the highway side.


Comments:
Potential bank movement to the west near the highway. Reduction of spur length may indicate failure.


Comments:
Several bank cuttings identified in the diversion channel since 2011.


# Stream Hierarchy

Stream Name:
2nd Order Tributary to Saddle Burnt River


Stream Name:
2nd order Tributary to SOUTH SASKATCHEWAN RIVER


Stream Name:
2nd order Tributary to SEVEN PERSONS CREEK


Stream Name:
3rd order Tributary to SEVEN PERSONS CREEK


Stream Name:
2nd order Tributary to GROS VENTRE CREEK


Stream Name:
2nd Order Tributary to Prairie Blood Coulee


Stream Name:
Lethbridge North Irrigation Drainage Canal


Stream Name:
2nd Order Tributary to WEST ARROWWOOD CREEK


Stream Name:
3rd Order Tributary to WEST ARROWWOOD CREEK


Stream Name:
2nd order Tributary to BLOOD INDIAN CREEK


Stream Name:
2nd order Tributary to SERVICEBERRY CREEK


Stream Name:
3rd order Tributary to SERVICEBERRY CREEK


Stream Name:
2nd order Tributary to WEST MICHICHI CREEK


Stream Name:
2nd order Tributary to NORTH SASKATCHEWAN RIVER


Stream Name:
2nd order Tributary to WHITE EARTH CREEK


Stream Name:
2nd order Tributary to RIVIERE QUI BARRE


Stream Name:
2nd Order Tributary to NORTH SASKATCHEWAN RIVER


Stream Name:
2nd order Tributary to LITTLE SMOKY RIVER


Stream Name:
2nd order Tributary to GRANDE PRAIRIE CREEK


Stream Name:
3rd order Tributary to GRANDE PRAIRIE CREEK


Stream Name:
2nd order Tributary to BEAVERLODGE RIVER


Stream Name:
2nd Order Tributary to SADDLE BURNT RIVER


Stream Name:
2nd order Tributary to SADDLE BURNT RIVER


Stream Name:
2nd order Tributary to POUCE COUPE RIVER


Stream Name:
2nd order Tributary to EAST PRAIRIE RIVER


Stream Name:
2nd order Tributary to SOUTH HEART RIVER


Stream Name:
2nd order Tributary to LITTLE PADDLE RIVER


Stream Name:
4th order Tributary to SEVEN PERSONS CREEK


Stream Name:
2nd Order Tributary to East Prairie River


Stream Name:
3rd Order Tributary to East Prairie River


Stream Name:
2nd Order Tributary to North Saskatchewan River


Stream Name:
2nd Order Tributary to Pouce Coupe River


Stream Name:
2nd Order Tributary to Little Red Deer River


Stream Name:
3rd Order Tributary to North Saskatchewan River


Stream Name:
3rd Order Tributary to Little Smoky River


Stream Name:
2nd Order Tributary to LITTLE PADDLE RIVER


Stream Name:
3rd Order Tributary to Grande Prairie Ck


Stream Name:
2nd Order Tributary to Grande Prairie Ck


Stream Name:
3rd Order Tributary to South Heart River


Stream Name:
2nd Order Tributary to Little Smoky River


Stream Name:
2nd Order Tributary to West Arrowwood Ck


Stream Name:
2nd Order Tributary to Bull Springs Coulee


Stream Name:
3rd order Tributary to NORTH SASKATCHEWAN RIVER


Stream Name:
2nd Order Tributary to LITTLE STRAWBERRY CREEK


Stream Name:
2nd Order Tributary to WEST MICHICHI CREEK


