US Bridges

SR1/US431 over Boyd Spring Branch

Fair

Calhoun County, Alabama · 0.5 MI N JCT SR144 · Structure no. 009955

Built
1969
56 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
24 ft
2 main spans
Daily traffic
21,647
2022 count
Owner
State
State Highway Agency

About this bridge

SR1/US431 over Boyd Spring Branch is a concrete culvert carrying SR1/US431 over Boyd Spring Branch in Calhoun County, Alabama. It was built in 1969, so it is 56 years old, older 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 21,647 vehicles a day, roughly 13% of them trucks, projected to reach 30,305 by 2042. The structure is 24 ft (7.2 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR1/US431
CrossesBoyd Spring Branch
Location0.5 MI N JCT SR144
RouteU.S. Route 431
CountyCalhoun County
StateAlabama
Coordinates33.78676, -85.89748
Functional classUrban Other Principal Arterial

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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.9 US tons
Inventory rating34.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length24 ft (7.2 m)
Longest span11 ft (3.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,647 (2022)
Projected traffic30,305 by 2042
Trucks13%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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$1.6 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR1/US431 over Boyd Spring Branch built?

It was built in 1969, making it 56 years old in 2025.

What condition is SR1/US431 over Boyd Spring 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 July 2023.

How much traffic does SR1/US431 over Boyd Spring Branch carry?

About 21,647 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is SR1/US431 over Boyd Spring Branch?

The structure is 24 ft (7.2 m) long with a longest span of 11 ft (3.5 m).

Who owns SR1/US431 over Boyd Spring Branch?

It is owned by the State Highway Agency.