How to Code Load Rating of a New Bridge with No Load Rating Analysis. How to Code Load Rating of a Bridge Exempt from Load Rating Per ODOT BDM

(1)

BMS Coding of Load Rating

How to Code Load Rating of a New Bridge with No Load Rating Analysis

ODOT

Item #

Description

BMS

Code

Notes

83A Ohio Percent of Legal Loads: 150 Assuming 150% for a new structure 83B Rating Year: 2012 Year when load rating was determined

84 Method of Rating: 5 Engineering Judgment – Superstructure (Default) 85 Software of Rating Analysis: 0 No calculations were done for load rating (Default) 87 Rating Source: 1 Plans & Information available for load rating (Default) 92A Operating Rating Factor: 1300 RF=1.3000 (based on ratio of MBE LL factors 1.75/1.25) 92B Operating Rating Load: 3 HL93 Loading

93A Inventory Rating Factor: 1000 RF=1.000 93B Inventory Rating Load: 3 HL93 Loading

How to Code Load Rating of a Bridge Exempt from Load Rating Per ODOT

BDM

ODOT

Item #

Description

BMS

Code

Notes

84 Method of Rating: 2 Load Factor Rating (LFR) 85 Software of Rating Analysis: 7 Combination

87 Rating Source: 1 Plans & Information available for load rating (Default) 92A Operating Rating Factor: 1250 RF=1.250 (based on ratio of HS25/HS20)

92B Operating Rating Load: 2 HS20 Loading (default for highway bridges) 93A Inventory Rating Factor: 1000 RF=1.000

(2)

How to Code Load Rating of a Bridge under More Than 6.5 Feet (~2 meters)

Of Fill

ODOT

Item #

Description

BMS

Code

Notes

84 Method of Rating: 2 Load Factor Rating (LFR) 85 Software of Rating Analysis: 7 Combination

87 Rating Source: 1 Plans & Information available for load rating (Default)

92A Operating Rating Factor: 9999 Maximum value of RF=9.999

92B Operating Rating Load: 2 HS20 Loading (default for highway bridges) 93A Inventory Rating Factor: 9999 Maximum value of RF=9.999

(3)

How to Code Load Rating of a Bridge with Assigned Load Rating

{For Culverts Designed Using ASTM C1577 (LRFD), C1433 (LFD), C789

(LFD) & C850 (LFD)}

Rating Load: HS20

ODOT

Item #

Description

BMS

Code

Notes

84 Method of Rating: D Assigned LFR using HS20 85 Software of Rating Analysis: 7 Combination

87 Rating Source: 1 Plans & Information available for load rating (Default) 92A Operating Rating Factor: 1250 RF=1.250 (based on HS25/HS20)

93B Inventory Rating Load: 2 HS20 Loading (default for highway bridges)

Rating Load: HL93

ODOT

Item #

Description

BMS

Code

Notes

84 Method of Rating: F Assigned LFR using HL93 85 Software of Rating Analysis: 7 Combination

87 Rating Source: 1 Plans & Information available for load rating (Default) 92A Operating Rating Factor: 1300 RF=1.3000 (based on ratio of MBE LL factors 1.75/1.25) 92B Operating Rating Load: 3 HL93 Loading

93A Inventory Rating Factor: 1000 RF=1.000 93B Inventory Rating Load: 3 HL93 Loading

(4)

How to Code Load Rating of a Bridge When No Plans or Information

Available for Load Rating (Also known as Good-5 Bridge)

ODOT

Item #

Description

BMS

Code

Notes

83A Ohio Percent of Legal Loads: 100 Rate based on the Engineering Judgment 83B Rating Year: 2012 Year when load rating was determined

84 Method of Rating: 5 Engineering Judgment – Superstructure (Default) 85 Software of Rating Analysis: 0 No calculations were done for load rating (Default) 87 Rating Source: 0 No Plan & Information available for load rating

(Default) 92A Operating Rating Factor: 1000 RF=1.000

93B Inventory Rating Load: 2 HS20 Loading (default for highway bridges)

How to Code Load Rating Controlled By Engineering Judgment of

Substructure

ODOT

Item #

Description

BMS

Code

Notes

83A Ohio Percent of Legal Loads: 90 Example, say 90% [POSTING Needed] 83B Rating Year: 2012 Year when load rating was determined

84 Method of Rating: 7 Engineering Judgment – Substructure 85 Software of Rating Analysis: 7 Combination

87 Rating Source: 1 Plans & Information available for load rating (Default) 92A Operating Rating Factor: 0500 Example, RF should be less than 1.000

92B Operating Rating Load: 2 HS20 Loading (default for highway bridges) 93A Inventory Rating Factor: 0500 Example, RF should be less than 1.000 93B Inventory Rating Load: 2 HS20 Loading (default for highway bridges)

(5)

How to Code Load Rating Of a Bridge That Is Rated 100% Legal or Above

but the Engineer Wants to Post It

ODOT

Item #

Description

BMS

Code

Notes

83A Ohio Percent of Legal Loads: 90 Example: the Engineer wants to post it at, say 90% 83B Rating Year: 2012 Year when load rating was determined

84 Method of Rating: 0 Field evaluation and documented engineering Judgment (document your logic for posting) 85 Software of Rating Analysis: 7 Combination

87 Rating Source: 1 Plans & Information available for load rating (Default) 92A Operating Rating Factor: 0500 Example, RF should be less than 1.000

92B Operating Rating Load: 2 HS20 Loading (default for highway bridges) 93A Inventory Rating Factor: 0500 Example, RF should be less than 1.000 93B Inventory Rating Load: 2 HS20 Loading (default for highway bridges)

How to Code Load Rating Of a Bridge That Is Rated Below 100% Legal But

the Engineer Does not Want To Post It

ODOT

Item #

Description

BMS

Code

Notes

83A Ohio Percent of Legal Loads: 100 100% or more of Ohio Legal

83B Rating Year: 2012 Year when load rating was determined 84 Method of Rating: 0 Field evaluation and documented engineering

Judgment (document your logic for Not posting) 85 Software of Rating Analysis: 7 Combination

87 Rating Source: 1 Plans & Information available for load rating (Default) 92A Operating Rating Factor: 1000 RF= 1.000

92B Operating Rating Load: 2 HS20 Loading (default for highway bridges) 93A Inventory Rating Factor: 1000 RF = 1.000