US Bridges

Century Boulevard over Little Seneca Creek Trib

Good

Montgomery County, Maryland · 0.3 Miles West of I-270 · Structure no. 200000M-0387010

Built
2014
11 years old
Condition
Good
inspected November 2023
Type
Culvert
Steel
Length
53 ft
Daily traffic
3,720
2023 count
Owner
County
County Highway Agency

About this bridge

Century Boulevard over Little Seneca Creek Trib is a steel culvert carrying Century Boulevard over Little Seneca Creek Trib in Montgomery County, Maryland. It was built in 2014, so it is 11 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 3,720 vehicles a day, roughly 5% of them trucks, projected to reach 4,540 by 2043. The structure is 53 ft (16.2 m) long and 131 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCentury Boulevard
CrossesLittle Seneca Creek Trib
Location0.3 Miles West of I-270
RouteCounty Highway 3597
Coordinates39.19635, -77.26865
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating106.8 US tons
Inventory rating106.8 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans0
Design loadHS 25 or greater
Structure length53 ft (16.2 m)
Longest span53 ft (16.2 m)
Deck width131 ft (39.9 m)
Roadway width127 ft (38.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,720 (2023)
Projected traffic4,540 by 2043
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Century Boulevard over Little Seneca Creek Trib built?

It was built in 2014, making it 11 years old in 2025.

What condition is Century Boulevard over Little Seneca Creek Trib 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 November 2023.

How much traffic does Century Boulevard over Little Seneca Creek Trib carry?

About 3,720 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Century Boulevard over Little Seneca Creek Trib?

The structure is 53 ft (16.2 m) long with a longest span of 53 ft (16.2 m) and a deck 131 ft wide.

Who owns Century Boulevard over Little Seneca Creek Trib?

It is owned by the County Highway Agency.