US Bridges

Knollwood Road over Murdock Creek

Good

Roanoke city, Virginia · 0.07 Fr. Mudlick RD · Structure no. 000000000026674

Built
2000
25 years old
Condition
Good
inspected September 2024
Type
Frame
Concrete
Length
23 ft
1 main span
Daily traffic
1
2002 count
Owner
City
City or Municipal Highway Agency

About this bridge

Knollwood Road over Murdock Creek is a concrete frame carrying Knollwood Road over Murdock Creek in Roanoke city, Virginia. It was built in 2000, so it is 25 years old, younger than the Virginia average of 50.7 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 1 vehicles a day, projected to reach 2 by 2042. The structure is 23 ft (7 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesKnollwood Road
CrossesMurdock Creek
Location0.07 Fr. Mudlick RD
RouteCity Street 0
CountyRoanoke city
StateVirginia
Coordinates37.2591, -80.0077
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
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 adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53 US tons
Inventory rating41 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckOther
Main spans1
Design loadHS 20
Structure length23 ft (7 m)
Longest span21 ft (6.4 m)
Deck width38 ft (11.7 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1 (2002)
Projected traffic2 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$78 million (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Knollwood Road over Murdock Creek built?

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

What condition is Knollwood Road over Murdock Creek 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 September 2024.

How much traffic does Knollwood Road over Murdock Creek carry?

About 1 vehicles per day (2002 count).

How long is Knollwood Road over Murdock Creek?

The structure is 23 ft (7 m) long with a longest span of 21 ft (6.4 m) and a deck 38 ft wide.

Who owns Knollwood Road over Murdock Creek?

It is owned by the City or Municipal Highway Agency.