US Bridges

Richter Farm Road over Little Seneca Creek Trib

Fair

Montgomery County, Maryland · 0.1 Miles South of Md 117 · Structure no. 200000M-0389010

Built
2000
25 years old
Condition
Fair
inspected November 2023
Type
Culvert
Steel
Length
25 ft
Daily traffic
7,433
2022 count
Owner
County
County Highway Agency

About this bridge

Richter Farm Road over Little Seneca Creek Trib is a steel culvert carrying Richter Farm Road over Little Seneca Creek Trib in Montgomery County, Maryland. It was built in 2000, so it is 25 years old, younger 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 7,433 vehicles a day, roughly 3% of them trucks, projected to reach 9,260 by 2044. The structure is 25 ft (7.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesRichter Farm Road
CrossesLittle Seneca Creek Trib
Location0.1 Miles South of Md 117
RouteCounty Highway 6603
Coordinates39.15864, -77.29647
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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans0
Design loadUnknown
Structure length25 ft (7.7 m)
Longest span23 ft (7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,433 (2022)
Projected traffic9,260 by 2044
Trucks3%
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 Richter Farm Road over Little Seneca Creek Trib built?

It was built in 2000, making it 25 years old in 2025.

What condition is Richter Farm Road over Little Seneca Creek Trib 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 November 2023.

How much traffic does Richter Farm Road over Little Seneca Creek Trib carry?

About 7,433 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Richter Farm Road over Little Seneca Creek Trib?

The structure is 25 ft (7.7 m) long with a longest span of 23 ft (7 m).

Who owns Richter Farm Road over Little Seneca Creek Trib?

It is owned by the County Highway Agency.