US Bridges

Dumas Bridge Road over Blackburn Fork

PoorClosed to traffic

Blount County, Alabama · 6 MI S of Oneonta · Structure no. 002738

Built
1942
83 years old
Condition
Poor
inspected January 2015
Type
Truss - Thru
Steel
Length
95 ft
1 main span
Daily traffic
106
2015 count
Owner
County
County Highway Agency

About this bridge

Dumas Bridge Road over Blackburn Fork is a steel truss - thru carrying Dumas Bridge Road over Blackburn Fork in Blount County, Alabama. It was built in 1942, so it is 83 years old, older than the Alabama average of 51.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: closed to all traffic.

It carries about 106 vehicles a day, projected to reach 158 by 2035. The structure is 95 ft (29 m) long and 12 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesDumas Bridge Road
CrossesBlackburn Fork
Location6 MI S of Oneonta
RouteCounty Highway 234
StateAlabama
Coordinates33.86069, -86.44582
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2015
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry0: Immediate repair necessary to put back in service
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating0 US tons
Inventory rating0 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+1 approach)
Design loadUnknown
Structure length95 ft (29 m)
Longest span76 ft (23.2 m)
Deck width12 ft (3.7 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic106 (2015)
Projected traffic158 by 2035
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$345,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Dumas Bridge Road over Blackburn Fork built?

It was built in 1942, making it 83 years old in 2025.

What condition is Dumas Bridge Road over Blackburn Fork in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2015.

How much traffic does Dumas Bridge Road over Blackburn Fork carry?

About 106 vehicles per day (2015 count).

How long is Dumas Bridge Road over Blackburn Fork?

The structure is 95 ft (29 m) long with a longest span of 76 ft (23.2 m) and a deck 12 ft wide.

Who owns Dumas Bridge Road over Blackburn Fork?

It is owned by the County Highway Agency.