US Bridges

N Colorado ST over IH 10 Lower Level

Good

Bexar County, Texas · 0.45 MI S of SP 421 · Structure no. 150150007212039

Built
1949
76 years old
Condition
Good
inspected July 2024
Type
Tee Beam
Concrete
Length
82 ft
1 main span
Daily traffic
12,282
2020 count
Owner
State
State Highway Agency

About this bridge

N Colorado ST over IH 10 Lower Level is a concrete tee beam carrying N Colorado ST over IH 10 Lower Level in Bexar County, Texas. It was built in 1949, so it is 76 years old, older than the Texas average of 44.4 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 12,282 vehicles a day, roughly 3% of them trucks, projected to reach 17,195 by 2042. The structure is 82 ft (25 m) long and 63 ft wide.

CarriesN Colorado ST
CrossesIH 10 Lower Level
Location0.45 MI S of SP 421
RouteCity Street 7430
StateTexas
Coordinates29.44038, -98.50931
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadOther
Structure length82 ft (25 m)
Longest span82 ft (25 m)
Deck width63 ft (19.3 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deck27 ft (8.3 m)

Traffic and service

Average daily traffic12,282 (2020)
Projected traffic17,195 by 2042
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$10,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was N Colorado ST over IH 10 Lower Level built?

It was built in 1949, making it 76 years old in 2025.

What condition is N Colorado ST over IH 10 Lower Level 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 N Colorado ST over IH 10 Lower Level carry?

About 12,282 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is N Colorado ST over IH 10 Lower Level?

The structure is 82 ft (25 m) long with a longest span of 82 ft (25 m) and a deck 63 ft wide.

Who owns N Colorado ST over IH 10 Lower Level?

It is owned by the State Highway Agency.