US Bridges

N Spring Blvd over Minetta Branch

PoorPosted for load

Pinellas County, Florida · 0.4 MI W/O Grand Blvd · Structure no. 154000

Built
1924
101 years old
Condition
Poor
inspected July 2024
Type
Movable - Bascule
Steel
Length
358 ft
1 main span
Daily traffic
3,100
2023 count
Owner
County
County Highway Agency

About this bridge

N Spring Blvd over Minetta Branch is a steel movable - bascule carrying N Spring Blvd over Minetta Branch in Pinellas County, Florida. It was built in 1924, so it is 101 years old, older than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 3,100 vehicles a day, roughly 3% of them trucks, projected to reach 3,875 by 2042. The structure is 358 ft (109.2 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesN Spring Blvd
CrossesMinetta Branch
Location0.4 MI W/O Grand Blvd
RouteCounty Highway 0
StateFlorida
Coordinates28.14999, -82.7652
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.3 US tons
Inventory rating17.5 US tons

Structure

Structure typeMovable - Bascule
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+9 approach)
Design loadUnknown
Structure length358 ft (109.2 m)
Longest span42 ft (12.8 m)
Deck width28 ft (8.5 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,100 (2023)
Projected traffic3,875 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost$2.2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was N Spring Blvd over Minetta Branch built?

It was built in 1924, making it 101 years old in 2025.

What condition is N Spring Blvd over Minetta Branch in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does N Spring Blvd over Minetta Branch carry?

About 3,100 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is N Spring Blvd over Minetta Branch?

The structure is 358 ft (109.2 m) long with a longest span of 42 ft (12.8 m) and a deck 28 ft wide.

Who owns N Spring Blvd over Minetta Branch?

It is owned by the County Highway Agency.