US Bridges

SR 91 over Duck Creek

Fair

Cullman County, Alabama · 4 MI E JCT US31 * SR91 · Structure no. 004129

Built
1951
74 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
300 ft
6 main spans
Daily traffic
2,668
2022 count
Owner
State
State Highway Agency

About this bridge

SR 91 over Duck Creek is a steel stringer/multi-beam or girder carrying SR 91 over Duck Creek in Cullman County, Alabama. It was built in 1951, so it is 74 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 2,668 vehicles a day, roughly 13% of them trucks, projected to reach 3,735 by 2042. The structure is 300 ft (91.4 m) long and 26 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesSR 91
CrossesDuck Creek
Location4 MI E JCT US31 * SR91
RouteState Highway 91
CountyCullman County
StateAlabama
Coordinates34.09186, -86.72154
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating43.9 US tons
Inventory rating27.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadH 15
Structure length300 ft (91.4 m)
Longest span50 ft (15.2 m)
Deck width26 ft (7.8 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,668 (2022)
Projected traffic3,735 by 2042
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.9 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 91 over Duck Creek built?

It was built in 1951, making it 74 years old in 2025.

What condition is SR 91 over Duck Creek 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 November 2023.

How much traffic does SR 91 over Duck Creek carry?

About 2,668 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is SR 91 over Duck Creek?

The structure is 300 ft (91.4 m) long with a longest span of 50 ft (15.2 m) and a deck 26 ft wide.

Who owns SR 91 over Duck Creek?

It is owned by the State Highway Agency.