US Bridges

SH 146 over North Main ST

Fair

Harris County, Texas · 1.45 MI E of Spur 330 · Structure no. 121020038913112

Built
1996
29 years old
Condition
Fair
inspected September 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
275 ft
1 main span
Daily traffic
48,095
2019 count
Owner
State
State Highway Agency

About this bridge

SH 146 over North Main ST is a prestressed concrete stringer/multi-beam or girder carrying SH 146 over North Main ST in Harris County, Texas. It was built in 1996, so it is 29 years old, younger 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 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 48,095 vehicles a day, roughly 7% of them trucks, projected to reach 44,910 by 2033. The structure is 275 ft (83.8 m) long and 119 ft wide.

Location

Open in Google Maps
CarriesSH 146
CrossesNorth Main ST
Location1.45 MI E of Spur 330
RouteState Highway 146
CountyHarris County
StateTexas
Coordinates29.7504, -94.9638
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1 (+2 approach)
Design loadHS 20
Structure length275 ft (83.8 m)
Longest span115 ft (35.1 m)
Deck width119 ft (36.2 m)
Roadway width114 ft (34.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48,095 (2019)
Projected traffic44,910 by 2033
Trucks7%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 146 over North Main ST built?

It was built in 1996, making it 29 years old in 2025.

What condition is SH 146 over North Main ST 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 September 2022.

How much traffic does SH 146 over North Main ST carry?

About 48,095 vehicles per day (2019 count), of which roughly 7% are trucks.

How long is SH 146 over North Main ST?

The structure is 275 ft (83.8 m) long with a longest span of 115 ft (35.1 m) and a deck 119 ft wide.

Who owns SH 146 over North Main ST?

It is owned by the State Highway Agency.