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Bridge Statistics for Potomac, Maryland (MD) - Condition, Traffic, Stress, Structural Evaluation, Project Costs

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National Bridge Inventory (NBI) Statistics
Number of bridges: 13
Total length: 21 meters (69ft)
Total costs: $1,009,000
Total average daily traffic: 103,830
Total average daily truck traffic: 4,698
Total future (year 2029) average daily traffic: 118,420
National Bridge Inventory (NBI) Registered Bridges for Potomac
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New bridges - Historical Statistics

  • 1930-1939: 2
  • 1940-1949: 1
  • 1950-1959: 1
  • 1960-1969: 3
  • 1970-1979: 1
  • 1980-1989: 4
  • 1990-1999: 0
  • 2000-2009: 1

Reconstructed bridges - Historical Statistics

  • 1980-1989: 1
  • 1990-1999: 2

Average Daily Traffic

Bridge Condition - Deck

Bridge Condition - Superstructure

Bridge Condition - Substructure

Bridge Condition - Channel

Bridge Condition - Culverts

Structure Number: 200000M-001201,  Location: 1 MI SOUTH OF MD 189,  Route carried "on" structure: County highway 189,  Year Built: 1989,  Status: Open,  Structure Length: 1.46m (4.79ft),  Average Daily Traffic: 3,625 (year 2011),  Truck Traffic: 5%,  Average Future Daily Traffic: 5,000 (year 2031),  Design Load: HS 20,  Features Intersected: ROCK RUN,  Facility Carried by Structure: OAKLYN DRIVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 13.4m (44.0ft),  Skew: 3 degrees,  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 7.0m (23.0ft),  Curb-To-Curb Width: 13.4m (44.0ft),  Out-to-Out Width: 14.4m (47.2ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Satisfactory,  Channel: Satisfactory,  Operating Rating: 75.6 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 45.0 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 11,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Integral Concrete,  Membrane: Epoxy,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 200000M-001301,  Location: 1.5 MI W OF JCT SR 189 (Lat: 39.046667,  Lng: -77.216667),  Route carried "on" structure: County highway 195,  Year Built: 1942,  Year Reconstructed: 1992,  Status: Open,  Structure Length: 0.85m (2.79ft),  Average Daily Traffic: 5,990 (year 2011),  Truck Traffic: 3%,  Average Future Daily Traffic: 6,800 (year 2031),  Design Load: H 15,  Features Intersected: KILGOUR BRANCH,  Facility Carried by Structure: GLEN ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 2.784,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 5.8m (19.0ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 8.2m (26.9ft),  Curb-To-Curb Width: 5.9m (19.4ft),  Out-to-Out Width: 6.1m (20.0ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Fair,  Channel: Satisfactory,  Operating Rating: 27.0 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 18.9 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Meets minimum limits,  Deck Geometry: High priority of replacement,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: 30.0 - 39.9% below),  Length Of Structure Improvement: 1.58m (5.18ft),  Designated Inspection Frequency: Every 12 months,  Inspection Date: January 12,  Bridge Improvement Cost: $202,000,  Roadway Improvement Cost: $20,000,  Total Project Cost: $303,000 ( Estimate for 2007),  Deck Structure Type: Corrugated Steel,  Wearing Surface/Protective System: Wearing Surface: Bituminous
Structure Number: 200000M-001401,  Location: 1.5 MI W OF JCT SR 189,  Route carried "on" structure: County highway 195,  Year Built: 1930,  Year Reconstructed: 1998,  Status: Open,  Structure Length: 1.22m (4.00ft),  Average Daily Traffic: 8,000 (year 2011),  Truck Traffic: 3%,  Average Future Daily Traffic: 9,100 (year 2031),  Design Load: HS 20,  Features Intersected: WATTS BRANCH,  Facility Carried by Structure: GLEN ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 2.381,  Lanes on structure: 1,  Owner: County Highway Agency,  Approaching Roadway Width: 5.5m (18.0ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 11.3m (37.1ft),  Curb-To-Curb Width: 4.4m (14.4ft),  Out-to-Out Width: 4.9m (16.1ft)

Condition: Deck: Good,  Superstructure: Satisfactory,  Substructure: Fair,  Channel: Fair,  Operating Rating: 54.9 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 32.4 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: High priority of replacement,  Waterway Adequacy: Somewhat better than minimum adequacy,  Approach Roadway Alignment: High priority of corrective action,  Length Of Structure Improvement: 1.22m (4.00ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: January 11,  Bridge Improvement Cost: $40,000,  Roadway Improvement Cost: $4,000,  Total Project Cost: $44,000 ( Estimate for 2011),  Deck Structure Type: Corrugated Steel,  Wearing Surface/Protective System: Wearing Surface: Bituminous
Structure Number: 200000M-001501,  Location: 0.6 MI W OF GLEN MILL RD,  Route carried "on" structure: County highway 53,  Year Built: 1935,  Status: Posted for load,  Structure Length: 0.79m (2.59ft),  Average Daily Traffic: 4,400 (year 2011),  Truck Traffic: 5%,  Average Future Daily Traffic: 5,000 (year 2031),  Features Intersected: PINEY BRANCH,  Facility Carried by Structure: GLEN ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 3.475,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.4m (21.0ft),  Material/Design: Concrete,  Design/Construction: Tee Beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 6.7m (22.0ft),  Curb-To-Curb Width: 6.1m (20.0ft),  Out-to-Out Width: 7.2m (23.6ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Satisfactory,  Channel: Fair,  Operating Rating: 11.7 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 11.7 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: High priority of replacement,  Deck Geometry: High priority of replacement,  Waterway Adequacy: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Better than present minimum criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: > 39.9% below),  Length Of Structure Improvement: 1.52m (4.99ft),  Designated Inspection Frequency: Every 12 months,  Inspection Date: June 11,  Bridge Improvement Cost: $150,000,  Roadway Improvement Cost: $15,000,  Total Project Cost: $165,000 ( Estimate for 2011),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
Structure Number: 200000M-001601,  Location: 0.6 MI N OF GLEN RD.,  Route carried "on" structure: County highway 193,  Year Built: 1960,  Year Reconstructed: 2002,  Status: Open,  Structure Length: 0.88m (2.89ft),  Average Daily Traffic: 4,065 (year 2011),  Truck Traffic: 3%,  Average Future Daily Traffic: 4,600 (year 2031),  Design Load: H 20,  Features Intersected: PINEY BRANCH,  Facility Carried by Structure: GLEN MILL ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.917,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 8.2m (26.9ft),  Curb-To-Curb Width: 9.6m (31.5ft),  Out-to-Out Width: 10.2m (33.5ft)

Condition: Deck: Good,  Superstructure: Satisfactory,  Substructure: Satisfactory,  Channel: Satisfactory,  Operating Rating: 45.9 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 33.3 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: January 11,  Deck Structure Type: Corrugated Steel,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 200000M-002101,  Location: 0.8 MILES NORTH OF MD 190 (Lat: 39.040000,  Lng: -77.235000),  Route carried "on" structure: County highway 197,  Year Built: 1950,  Status: Open,  Structure Length: 1.55m (5.09ft),  Average Daily Traffic: 6,290 (year 2009),  Truck Traffic: 3%,  Average Future Daily Traffic: 7,100 (year 2029),  Features Intersected: WATTS BRANCH,  Facility Carried by Structure: PINEY MEETINGHOUSE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.998,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Skew: 3 degrees,  Material/Design: Concrete,  Design/Construction: Tee Beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 13.4m (44.0ft),  Curb-To-Curb Width: 7.3m (24.0ft),  Out-to-Out Width: 8.8m (28.9ft)

Condition: Deck: Fair,  Superstructure: Poor,  Substructure: Fair,  Channel: Fair,  Operating Rating: 67.5 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 40.5 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Meets minimum limits,  Deck Geometry: High priority of replacement,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Length Of Structure Improvement: 2.29m (7.51ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 11,  Bridge Improvement Cost: $420,000,  Roadway Improvement Cost: $42,000,  Total Project Cost: $462,000 ( Estimate for 2011),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
Structure Number: 200000M-014502,  Location: 1 MI E OF SEVEN LOCKS RD,  Route carried "on" structure: County highway 164,  Year Built: 1966,  Status: Open,  Structure Length: 1.80m (5.91ft),  Average Daily Traffic: 22,300 (year 2011),  Truck Traffic: 5%,  Average Future Daily Traffic: 25,250 (year 2031),  Design Load: HS 20+Mod,  Features Intersected: CABIN JOHN CREEK,  Facility Carried by Structure: TUCKERMAN LANE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 2.639,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 13.4m (44.0ft),  Material/Design: Concrete,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 4.3m (14.1ft)

Condition: Channel: Fair,  Culverts: Good,  Operating Rating: 65.7 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 33.3 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Better than present minimum criteria,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 11
Structure Number: 200000M-016903,  Location: .5 MI W OF SEVEN LOCKS RD,  Route carried "on" structure: County highway 164,  Year Built: 1966,  Status: Open,  Structure Length: 0.85m (2.79ft),  Average Daily Traffic: 18,600 (year 2011),  Truck Traffic: 5%,  Average Future Daily Traffic: 21,000 (year 2031),  Design Load: HS 20,  Features Intersected: SNAKEDEN BRANCH,  Facility Carried by Structure: TUCKERMAN LANE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 3.492,  Lanes on structure: 4,  Owner: County Highway Agency,  Approaching Roadway Width: 14.6m (47.9ft),  Material/Design: Steel,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 3.7m (12.1ft),  Curb or Sidewalk Widths: Left: 1.5m (4.9ft),  Right: 1.5m (4.9ft)

Condition: Channel: Satisfactory,  Culverts: Fair,  Operating Rating: 84.6 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 64.8 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Somewhat better than minimum adequacy,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 11
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Structure Number: 200000M-017001,  Location: 0.6 MI NORTH OF GLEN ROAD (Lat: 39.055000,  Lng: -77.201667),  Route carried "on" structure: County highway 3708,  Year Built: 1970,  Status: Posted for load,  Structure Length: 3.60m (11.81ft),  Average Daily Traffic: 2,300 (year 2011),  Truck Traffic: 5%,  Average Future Daily Traffic: 2,600 (year 2031),  Design Load: H 15,  Features Intersected: WATTS BRANCH,  Facility Carried by Structure: AMBLESIDE DRIVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.531,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.9m (25.9ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 28.0m (91.9ft),  Curb or Sidewalk Widths: Left: 1.5m (4.9ft),  Right: 0.8m (2.6ft),  Curb-To-Curb Width: 7.9m (25.9ft),  Out-to-Out Width: 10.7m (35.1ft)

Condition: Deck: Good,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Good,  Operating Rating: 45.0 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 19.8 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: High priority of corrective action,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 3.60m (11.81ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 11,  Bridge Improvement Cost: $32,000,  Roadway Improvement Cost: $3,000,  Total Project Cost: $35,000 ( Estimate for 2011),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
Structure Number: 200000M-020801,  Location: 0.1 MI N OF JCT SR 190,  Route carried "on" structure: County highway 5961,  Year Built: 1985,  Status: Open,  Structure Length: 5.61m (18.41ft),  Average Daily Traffic: 130 (year 2011),  Truck Traffic: 3%,  Average Future Daily Traffic: 170 (year 2031),  Design Load: HS 20,  Features Intersected: WATTS BRANCH,  Facility Carried by Structure: LAKE POTOMAC DRIVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.9m (25.9ft),  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 21.3m (69.9ft),  Curb or Sidewalk Widths: Left: 1.5m (4.9ft),  Right: 1.5m (4.9ft),  Curb-To-Curb Width: 7.9m (25.9ft),  Out-to-Out Width: 11.6m (38.1ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 57.6 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 36.0 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 11,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete,  Deck Protection: Epoxy Coated Reinforcing
Structure Number: 200000M-023703,  Location: 1.5 MI E OF JCT SR MD 189,  Route carried "on" structure: County highway 166,  Year Built: 1989,  Status: Open,  Structure Length: 0.91m (2.99ft),  Average Daily Traffic: 13,800 (year 2011),  Truck Traffic: 5%,  Average Future Daily Traffic: 15,600 (year 2031),  Design Load: HS 20,  Features Intersected: BUCK BRANCH TRIBUTARY,  Facility Carried by Structure: DEMOCRACY BLVD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 9.8m (32.2ft),  Skew: 4 degrees,  Material/Design: Steel,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 4.3m (14.1ft)

Condition: Channel: Good,  Culverts: Fair,  Structural Evaluation: Somewhat better than minimum adequacy,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: Febuary 11
Structure Number: 200000M-024002,  Location: 2 MI E OF JCT SR MD 189,  Route carried "on" structure: County highway 166,  Year Built: 1988,  Status: Open,  Structure Length: 1.52m (4.99ft),  Average Daily Traffic: 13,800 (year 2011),  Truck Traffic: 5%,  Average Future Daily Traffic: 15,600 (year 2031),  Design Load: HS 20,  Features Intersected: BUCK BRANCH,  Facility Carried by Structure: DEMOCRACY BLVD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 9.8m (32.2ft),  Skew: 4 degrees,  Material/Design: Concrete,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 3.0m (9.8ft)

Condition: Channel: Good,  Culverts: Satisfactory,  Inventory Rating: 68.4 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Equal to present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: Febuary 11
Structure Number: 200000M-031602,  Location: 0.4 MI NORTH OF MD 191,  Route carried "on" structure: County highway 191,  Year Built: 2002,  Status: Open,  Structure Length: 0.67m (2.20ft),  Average Daily Traffic: 530 (year 2011),  Truck Traffic: 5%,  Average Future Daily Traffic: 600 (year 2031),  Design Load: HS 20,  Features Intersected: KEN BRANCH,  Facility Carried by Structure: KENDALE ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.1m (20.0ft),  Skew: 1 degrees,  Material/Design: Concrete,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 1.8m (5.9ft)

Condition: Channel: Good,  Culverts: Satisfactory,  Operating Rating: 62.1 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 36.9 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Equal to present minimum criteria,  Waterway Adequacy: Meets minimum limits,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 11
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