US Bridges

SR-304 over Swan Creek (relief)

Good

Limestone County, Alabama · 0.3M W SR-304/I-65 · Structure no. 021509

Built
2023
2 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
160 ft
2 main spans
Daily traffic
9,052
2023 count
Owner
State
State Highway Agency

About this bridge

SR-304 over Swan Creek (relief) is a prestressed concrete stringer/multi-beam or girder carrying SR-304 over Swan Creek (relief) in Limestone County, Alabama. It was built in 2023, so it is 2 years old, younger than the Alabama average of 51.1 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 9,052 vehicles a day, roughly 10% of them trucks, projected to reach 18,655 by 2041. The structure is 160 ft (48.8 m) long and 38 ft wide.

Location

Open in Google Maps
CarriesSR-304
CrossesSwan Creek (relief)
Location0.3M W SR-304/I-65
RouteCounty Highway 24
CountyLimestone County
StateAlabama
Coordinates34.7309, -86.94178
Functional classRural Minor Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.8 US tons
Inventory rating38.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length160 ft (48.8 m)
Longest span80 ft (24.4 m)
Deck width38 ft (11.7 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,052 (2023)
Projected traffic18,655 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$1.7 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR-304 over Swan Creek (relief) built?

It was built in 2023, making it 2 years old in 2025.

What condition is SR-304 over Swan Creek (relief) 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 November 2023.

How much traffic does SR-304 over Swan Creek (relief) carry?

About 9,052 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is SR-304 over Swan Creek (relief)?

The structure is 160 ft (48.8 m) long with a longest span of 80 ft (24.4 m) and a deck 38 ft wide.

Who owns SR-304 over Swan Creek (relief)?

It is owned by the State Highway Agency.