US Bridges

Merriman RD/613 over Back Creek

Fair

Roanoke County, Virginia · 0.05-RTE615; 0.85-RTE688 · Structure no. 000000000014992

Built
1963
62 years old
Condition
Fair
inspected December 2023
Type
Tee Beam
Concrete
Length
130 ft
3 main spans
Daily traffic
3,007
2022 count
Owner
State
State Highway Agency

About this bridge

Merriman RD/613 over Back Creek is a concrete tee beam carrying Merriman RD/613 over Back Creek in Roanoke County, Virginia. It was built in 1963, so it is 62 years old, older 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 3,007 vehicles a day, projected to reach 4,062 by 2042. The structure is 130 ft (39.6 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesMerriman RD/613
CrossesBack Creek
Location0.05-RTE615; 0.85-RTE688
RouteCounty Highway 613
CountyRoanoke County
StateVirginia
Coordinates37.19317, -80.0004
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating31 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length130 ft (39.6 m)
Longest span44 ft (13.4 m)
Deck width31 ft (9.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,007 (2022)
Projected traffic4,062 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$548.9 million (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Merriman RD/613 over Back Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is Merriman RD/613 over Back Creek 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 December 2023.

How much traffic does Merriman RD/613 over Back Creek carry?

About 3,007 vehicles per day (2022 count).

How long is Merriman RD/613 over Back Creek?

The structure is 130 ft (39.6 m) long with a longest span of 44 ft (13.4 m) and a deck 31 ft wide.

Who owns Merriman RD/613 over Back Creek?

It is owned by the State Highway Agency.