US Bridges

Mill Slough Road over Mill Slough

Good

Osceola County, Florida · 0.2 Mile E of Michigan Av · Structure no. 925002

Built
1976
49 years old, rebuilt 1993
Condition
Good
inspected July 2024
Type
Culvert
Concrete
Length
44 ft
4 main spans
Daily traffic
8,700
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mill Slough Road over Mill Slough is a concrete culvert carrying Mill Slough Road over Mill Slough in Osceola County, Florida. It was built in 1976 and reconstructed in 1993, so it is 49 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 8,700 vehicles a day, roughly 3% of them trucks, projected to reach 15,094 by 2043. The structure is 44 ft (13.4 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesMill Slough Road
CrossesMill Slough
Location0.2 Mile E of Michigan Av
RouteCity Street 0
StateFlorida
Coordinates28.31529, -81.38828
Functional classUrban Collector

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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating65.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
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 traffic8,700 (2023)
Projected traffic15,094 by 2043
Trucks3%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Mill Slough Road over Mill Slough built?

It was built in 1976, making it 49 years old in 2025. It was reconstructed in 1993.

What condition is Mill Slough Road over Mill Slough 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 July 2024.

How much traffic does Mill Slough Road over Mill Slough carry?

About 8,700 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Mill Slough Road over Mill Slough?

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

Who owns Mill Slough Road over Mill Slough?

It is owned by the City or Municipal Highway Agency.