US Bridges

Seminole Blvd over Mills Creek

Fair

Seminole County, Florida · Seminole Blvd - Mills CR · Structure no. 770002

Built
1935
90 years old
Condition
Fair
inspected August 2023
Type
Tee Beam
Concrete
Length
64 ft
2 main spans
Daily traffic
6,700
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Seminole Blvd over Mills Creek is a concrete tee beam carrying Seminole Blvd over Mills Creek in Seminole County, Florida. It was built in 1935, so it is 90 years old, older than the Florida average of 41.3 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 6,700 vehicles a day, roughly 10% of them trucks, projected to reach 11,625 by 2042. The structure is 64 ft (19.5 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSeminole Blvd
CrossesMills Creek
LocationSeminole Blvd - Mills CR
RouteCity Street 0
CountySeminole County
StateFlorida
Coordinates28.81605, -81.27729
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.8 US tons
Inventory rating41.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length64 ft (19.5 m)
Longest span30 ft (9.1 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,700 (2023)
Projected traffic11,625 by 2042
Trucks10%
Lanes on structure2
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 Seminole Blvd over Mills Creek built?

It was built in 1935, making it 90 years old in 2025.

What condition is Seminole Blvd over Mills 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 August 2023.

How much traffic does Seminole Blvd over Mills Creek carry?

About 6,700 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Seminole Blvd over Mills Creek?

The structure is 64 ft (19.5 m) long with a longest span of 30 ft (9.1 m) and a deck 43 ft wide.

Who owns Seminole Blvd over Mills Creek?

It is owned by the City or Municipal Highway Agency.