NFA B120 over MURRAY RD. / I75


+36.01639, -83.98583
36°00'59" N, 83°59'09" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:NFA B120 over MURRAY RD. / I75
Structure number:47I00750035
Location:S OF SR131-I75 EXIT
Purpose:Carries highway and pedestrian walkway over highway
Route classification:Local (Urban) [19]
Length of largest span:66.3 ft. [20.2 m]
Total length:221.5 ft. [67.5 m]
Roadway width between curbs:27.9 ft. [8.5 m]
Deck width edge-to-edge:40.4 ft. [12.3 m]
Vertical clearance below bridge:15.4 ft. [4.7 m]
Skew angle:10°
Owner:State Highway Agency [01]
Year built:1969
Historic significance:Historical significance is not determinable at this time [4]
Design load:MS 18 / HS 20 [5]
Number of main spans:4
Main spans material:Concrete continuous [2]
Main spans design:Tee beam [04]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: January 2015 

Status:Open, no restriction [A]
Average daily traffic:2,320 [as of 2015]
Truck traffic:2% of total traffic
Deck condition:Very Good [8 out of 9]
Superstructure condition:Satisfactory [6 out of 9]
Substructure condition:Good [7 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Underclearances appraisal:Basically intolerable requiring high priority of corrrective action [3]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Scour condition:Bridge not over waterway. [N]
Operating rating:61.4 tons [55.8 metric tons]
Inventory rating:35.6 tons [32.4 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:84.5

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
January 201584.5Functionally obsoleteVery GoodSatisfactoryGood2320
January 201384.5Functionally obsoleteVery GoodSatisfactoryGood2320
January 201184.5Functionally obsoleteVery GoodSatisfactoryGood2320
January 200984.5Functionally obsoleteVery GoodSatisfactoryGood2320
January 200779.4Structurally deficientPoorSatisfactoryGood2320
December 200480.4Structurally deficientPoorSatisfactoryGood2320
March 200380.4Structurally deficientPoorSatisfactoryGood2320
March 200187.1Not deficientFairSatisfactoryGood1000
December 199889.1Not deficientFairSatisfactoryGood1000
February 199784.0Not deficientFairSatisfactoryGood1000
February 199584.1Not deficientSatisfactoryGoodGood1000
January 199384.1Not deficientSatisfactoryGoodGood1000
November 199084.1Not deficientSatisfactoryGoodGood1000