US Bridges

SR 21 over Institute Creek

Fair

Wilcox County, Alabama · 1.9 Mi.S.Of Snow Hill · Structure no. 014866

Built
1989
36 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
61 ft
4 main spans
Daily traffic
980
2013 count
Owner
State
State Highway Agency

About this bridge

SR 21 over Institute Creek is a concrete culvert carrying SR 21 over Institute Creek in Wilcox County, Alabama. It was built in 1989, so it is 36 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 980 vehicles a day, roughly 20% of them trucks, projected to reach 1,222 by 2033. The structure is 61 ft (18.7 m) long and 24 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSR 21
CrossesInstitute Creek
Location1.9 Mi.S.Of Snow Hill
RouteState Highway 21
CountyWilcox County
StateAlabama
Coordinates32.0079, -87.03667
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating90.5 US tons
Inventory rating54.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length61 ft (18.7 m)
Longest span14 ft (4.3 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic980 (2013)
Projected traffic1,222 by 2033
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedNone recorded
Estimated improvement cost$725,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 21 over Institute Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is SR 21 over Institute 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 21 over Institute Creek carry?

About 980 vehicles per day (2013 count), of which roughly 20% are trucks.

How long is SR 21 over Institute Creek?

The structure is 61 ft (18.7 m) long with a longest span of 14 ft (4.3 m) and a deck 24 ft wide.

Who owns SR 21 over Institute Creek?

It is owned by the State Highway Agency.