I-55 over I-55 / MILL BRANCH RD


+35.04583, -90.00722
35°02'45" N, 90°00'26" W
Source: National Bridge Inventory
Information not verified. Use at your own risk.


Name:I-55 over I-55 / MILL BRANCH RD
Structure number:79I00550021
Location:3.5 MI N OF MISS STA LINE
Purpose:Carries highway over highway
Route classification:Principal Arterial - Interstate (Urban) [11]
Length of largest span:94.5 ft. [28.8 m]
Total length:327.1 ft. [99.7 m]
Roadway width between curbs:140.8 ft. [42.9 m]
Deck width edge-to-edge:144.0 ft. [43.9 m]
Vertical clearance below bridge:14.8 ft. [4.5 m]
Skew angle:30°
Owner:State Highway Agency [01]
Year built:1960
Year reconstructed:2002
Historic significance:Historical significance is not determinable at this time [4]
Design load:MS 18+Mod / HS 20+Mod [6]
Number of main spans:4
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Monolithic Concrete (concurrently placed with structural deck) [1]

Latest Available Inspection: February 2015 

Status:Open, no restriction [A]
Average daily traffic:88,480 [as of 2014]
Truck traffic:13% of total traffic
Deck condition:Satisfactory [6 out of 9]
Superstructure condition:Good [7 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Equal to present minimum criteria [6]
Deck geometry appraisal:Superior to present desirable criteria [9]
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:58.4 tons [53.1 metric tons]
Inventory rating:35.6 tons [32.4 metric tons]
Evaluation:Functionally obsolete [2]
Sufficiency rating:89.7

Previous Inspections 

DateSuff. ratingEvaluationDeckSuper.Sub.ADT
February 201589.7Functionally obsoleteSatisfactoryGoodSatisfactory88480
February 201389.8Functionally obsoleteSatisfactoryGoodGood85540
March 201189.9Functionally obsoleteSatisfactoryGoodGood83120
April 200989.7Not deficientSatisfactoryGoodGood88310
June 200789.5Not deficientSatisfactoryGoodGood90700
August 200592.3Not deficientSatisfactoryGoodGood77500
August 200392.5Not deficientSatisfactoryGoodGood72330
September 200292.8Not deficientSatisfactoryGoodGood66160
September 200170.1Not deficientFairSatisfactorySatisfactory71030
January 200066.9Not deficientFairSatisfactorySatisfactory61120
December 199768.5Not deficientFairSatisfactorySatisfactory64310
August 199566.1Not deficientFairGoodSatisfactory60110
August 199366.8Not deficientFairGoodSatisfactory53310
November 199175.0Not deficientFairGoodSatisfactory52910