US Bridges

Murdock Road over Sewell Creek Trib.

Good

Cobb County, Georgia · 6 MI NE of Marietta · Structure no. 000000006750300

Built
1964
61 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete
Length
50 ft
2 main spans
Daily traffic
4,110
2024 count
Owner
County
County Highway Agency

About this bridge

Murdock Road over Sewell Creek Trib. is a concrete slab carrying Murdock Road over Sewell Creek Trib. in Cobb County, Georgia. It was built in 1964, so it is 61 years old, older than the Georgia average of 47.5 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 4,110 vehicles a day, roughly 1% of them trucks, projected to reach 2,895 by 2032. The structure is 50 ft (15.2 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesMurdock Road
CrossesSewell Creek Trib.
Location6 MI NE of Marietta
RouteCounty Highway 599
StateGeorgia
Coordinates33.98714, -84.45924
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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.9 US tons
Inventory rating19 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadH 15
Structure length50 ft (15.2 m)
Longest span25 ft (7.6 m)
Deck width30 ft (9 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,110 (2024)
Projected traffic2,895 by 2032
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$293,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Murdock Road over Sewell Creek Trib. built?

It was built in 1964, making it 61 years old in 2025.

What condition is Murdock Road over Sewell 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 May 2023.

How much traffic does Murdock Road over Sewell Creek Trib. carry?

About 4,110 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Murdock Road over Sewell Creek Trib.?

The structure is 50 ft (15.2 m) long with a longest span of 25 ft (7.6 m) and a deck 30 ft wide.

Who owns Murdock Road over Sewell Creek Trib.?

It is owned by the County Highway Agency.