US Bridges

Mill Road over Trib. of Four Mile Run

Fair

Alexandria city, Virginia · 0.03FREISENHOW / 0.17TO95 · Structure no. 000000000030554

Built
2015
10 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete
Length
22 ft
3 main spans
Daily traffic
9,684
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mill Road over Trib. of Four Mile Run is a concrete culvert carrying Mill Road over Trib. of Four Mile Run in Alexandria city, Virginia. It was built in 2015, so it is 10 years old, younger than the Virginia average of 50.7 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 9,684 vehicles a day, roughly 1% of them trucks, projected to reach 14,139 by 2042. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMill Road
CrossesTrib. of Four Mile Run
Location0.03FREISENHOW / 0.17TO95
RouteCity Street 0
CountyAlexandria city
StateVirginia
Coordinates38.80041, -77.06731
Functional classUrban Collector

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 inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating94 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,684 (2022)
Projected traffic14,139 by 2042
Trucks1%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$2.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mill Road over Trib. of Four Mile Run built?

It was built in 2015, making it 10 years old in 2025.

What condition is Mill Road over Trib. of Four Mile Run 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 September 2024.

How much traffic does Mill Road over Trib. of Four Mile Run carry?

About 9,684 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Mill Road over Trib. of Four Mile Run?

The structure is 22 ft (6.7 m) long with a longest span of 7 ft (2.1 m).

Who owns Mill Road over Trib. of Four Mile Run?

It is owned by the City or Municipal Highway Agency.