US Bridges

SR 20 over Commander Creek

Good

Calhoun County, Florida · 3.0 Mi. E of Blountstown · Structure no. 470015

Built
1940
85 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
44 ft
4 main spans
Daily traffic
6,200
2022 count
Owner
State
State Highway Agency

About this bridge

SR 20 over Commander Creek is a concrete culvert carrying SR 20 over Commander Creek in Calhoun County, Florida. It was built in 1940, so it is 85 years old, older than the Florida average of 41.3 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 6,200 vehicles a day, roughly 17% of them trucks, projected to reach 10,757 by 2044. The structure is 44 ft (13.4 m) long. If it were closed, the detour would be 24.2 mi (39 km).

Location

Open in Google Maps
CarriesSR 20
CrossesCommander Creek
Location3.0 Mi. E of Blountstown
RouteState Highway 20
CountyCalhoun County
StateFlorida
Coordinates30.42586, -85.143
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadH 15
Structure length44 ft (13.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,200 (2022)
Projected traffic10,757 by 2044
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 20 over Commander Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is SR 20 over Commander Creek 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 April 2023.

How much traffic does SR 20 over Commander Creek carry?

About 6,200 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is SR 20 over Commander Creek?

The structure is 44 ft (13.4 m) long with a longest span of 10 ft (3 m).

Who owns SR 20 over Commander Creek?

It is owned by the State Highway Agency.