US Bridges

Commerce ST & RR over Navigation Blvd

FairPosted for load

Harris County, Texas · 0.15 MI SE of US 59 · Structure no. 121020B26105602

Built
1936
89 years old
Condition
Fair
inspected November 2023
Type
Slab
Concrete Continuous
Length
47 ft
2 main spans
Daily traffic
562
2015 count
Owner
City
City or Municipal Highway Agency

About this bridge

Commerce ST & RR over Navigation Blvd is a concrete continuous slab carrying Commerce ST & RR over Navigation Blvd in Harris County, Texas. It was built in 1936, so it is 89 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 562 vehicles a day, roughly 1% of them trucks, projected to reach 798 by 2035. The structure is 47 ft (14.3 m) long and 202 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCommerce ST & RR
CrossesNavigation Blvd
Location0.15 MI SE of US 59
RouteCity Street 0
CountyHarris County
StateTexas
Coordinates29.75765, -95.34938
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length47 ft (14.3 m)
Longest span20 ft (6.1 m)
Deck width202 ft (61.6 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic562 (2015)
Projected traffic798 by 2035
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and railroad
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Commerce ST & RR over Navigation Blvd built?

It was built in 1936, making it 89 years old in 2025.

What condition is Commerce ST & RR over Navigation Blvd 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 Commerce ST & RR over Navigation Blvd carry?

About 562 vehicles per day (2015 count), of which roughly 1% are trucks.

How long is Commerce ST & RR over Navigation Blvd?

The structure is 47 ft (14.3 m) long with a longest span of 20 ft (6.1 m) and a deck 202 ft wide.

Who owns Commerce ST & RR over Navigation Blvd?

It is owned by the City or Municipal Highway Agency.