US Bridges

Norbeck RD & Norwo over Northwest Branch

Good

Montgomery County, Maryland · 0.7 Miles East of Md 182 · Structure no. 200000M-0159010

Built
2002
23 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
88 ft
1 main span
Daily traffic
20,695
2023 count
Owner
County
County Highway Agency

About this bridge

Norbeck RD & Norwo over Northwest Branch is a steel stringer/multi-beam or girder carrying Norbeck RD & Norwo over Northwest Branch in Montgomery County, Maryland. It was built in 2002, so it is 23 years old, younger than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 20,695 vehicles a day, roughly 3% of them trucks, projected to reach 28,780 by 2045. The structure is 88 ft (26.8 m) long and 157 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

No coordinates are recorded for this structure.

CarriesNorbeck RD & Norwo
CrossesNorthwest Branch
Location0.7 Miles East of Md 182
RouteCounty Highway 7445
CountyMontgomery County
StateMaryland
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating83.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length88 ft (26.8 m)
Longest span83 ft (25.3 m)
Deck width157 ft (47.9 m)
Roadway width132 ft (40.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,695 (2023)
Projected traffic28,780 by 2045
Trucks3%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Norbeck RD & Norwo over Northwest Branch built?

It was built in 2002, making it 23 years old in 2025.

What condition is Norbeck RD & Norwo over Northwest Branch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

How much traffic does Norbeck RD & Norwo over Northwest Branch carry?

About 20,695 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Norbeck RD & Norwo over Northwest Branch?

The structure is 88 ft (26.8 m) long with a longest span of 83 ft (25.3 m) and a deck 157 ft wide.

Who owns Norbeck RD & Norwo over Northwest Branch?

It is owned by the County Highway Agency.