US Bridges

Navco Road over Bolton Branch

Fair

Mobile County, Alabama · 100 South of Mcvay Drive · Structure no. 019982

Built
2008
17 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete
Length
37 ft
3 main spans
Daily traffic
7,844
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Navco Road over Bolton Branch is a concrete culvert carrying Navco Road over Bolton Branch in Mobile County, Alabama. It was built in 2008, so it is 17 years old, younger than the Alabama average of 51.1 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 7,844 vehicles a day, roughly 4% of them trucks, projected to reach 11,766 by 2044. The structure is 37 ft (11.3 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesNavco Road
CrossesBolton Branch
Location100 South of Mcvay Drive
RouteCity Street 0
CountyMobile County
StateAlabama
Coordinates30.64489, -88.10261
Functional classUrban 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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating82.5 US tons
Inventory rating49.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck0 ft (0 m)

Traffic and service

Average daily traffic7,844 (2024)
Projected traffic11,766 by 2044
Trucks4%
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

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$644,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Navco Road over Bolton Branch built?

It was built in 2008, making it 17 years old in 2025.

What condition is Navco Road over Bolton Branch 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 January 2024.

How much traffic does Navco Road over Bolton Branch carry?

About 7,844 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Navco Road over Bolton Branch?

The structure is 37 ft (11.3 m) long with a longest span of 12 ft (3.7 m).

Who owns Navco Road over Bolton Branch?

It is owned by the City or Municipal Highway Agency.