US Bridges

Bonifant Road over Northwest Branch

Fair

Montgomery County, Maryland · 0.6 Miles East of Md 182 · Structure no. 200000M-0093020

Built
1971
54 years old
Condition
Fair
inspected October 2024
Type
Culvert
Concrete
Length
56 ft
3 main spans
Daily traffic
12,165
2023 count
Owner
County
County Highway Agency

About this bridge

Bonifant Road over Northwest Branch is a concrete culvert carrying Bonifant Road over Northwest Branch in Montgomery County, Maryland. It was built in 1971, so it is 54 years old, older than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 12,165 vehicles a day, roughly 5% of them trucks, projected to reach 16,388 by 2043. The structure is 56 ft (17 m) long. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesBonifant Road
CrossesNorthwest Branch
Location0.6 Miles East of Md 182
RouteCounty Highway 76
CountyMontgomery County
StateMaryland
Coordinates39.09355, -77.03502
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating43.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length56 ft (17 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,165 (2023)
Projected traffic16,388 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

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 Bonifant Road over Northwest Branch built?

It was built in 1971, making it 54 years old in 2025.

What condition is Bonifant Road over Northwest Branch in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.

How much traffic does Bonifant Road over Northwest Branch carry?

About 12,165 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Bonifant Road over Northwest Branch?

The structure is 56 ft (17 m) long with a longest span of 12 ft (3.7 m).

Who owns Bonifant Road over Northwest Branch?

It is owned by the County Highway Agency.