Is 270 over Is 370 And Ramp B

Fair Condition37 years old216,270 vehicles/day

Location

StateMaryland
CountyMontgomery
Location1.53 Mile South Of Md 117
CarriesIs 270
CrossesIs 370 And Ramp B
Coordinates39.12120, -77.19782

Condition Ratings

Overall ConditionFair
Deck7 (Good)
Superstructure6 (Satisfactory)
Substructure7 (Good)
Scour CriticalNot applicable

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length311.0 ft (94.8 m)
Max Span153.9 ft (46.9 m)
Deck Width212.6 ft (64.8 m)
Deck Area6143.0 sq m
Main Spans2
Year Built1989

Traffic

Avg Daily Traffic216,270 (2009)
Truck Traffic8%
Lanes On Bridge12
Lanes Under Bridge7

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Structure Number100000150157010

Nearby Bridges

Is 270 Ramp C(5) over Is 370 & Ramp B 0.1 mi Good Is 370 EB over Is 370 Ramp B 0.1 mi Fair Is 370 Ramp F(1) over Is 270 C-d Rds & Rp C/5 0.1 mi Fair Is 370 Ramp F over Is 370 0.1 mi Good Is 270 Ramp C(5) over Is 270; C-d Rds & Rp F/1 0.2 mi Fair Industrial Drive over Is 370 0.5 mi Good Washingtonian Boul over Sam Eig Highway 0.5 mi Good Muddy Branch RD EB over Is 270 & NB C-d Road 0.8 mi Good Muddy Branch RD WB over Is 270 & NB C-d Road 0.9 mi Good Decoverly Drive over Muddy Branch Tributary 0.9 mi Fair