US Bridges

SH 46 (lp 337) EB over Rock ST

Good

Comal County, Texas · 2.6 MI NW of IH 35 · Structure no. 150460021601015

Built
1967
58 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
125 ft
1 main span
Daily traffic
18,852
2018 count
Owner
State
State Highway Agency

About this bridge

SH 46 (lp 337) EB over Rock ST is a prestressed concrete stringer/multi-beam or girder carrying SH 46 (lp 337) EB over Rock ST in Comal County, Texas. It was built in 1967, so it is 58 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 18,852 vehicles a day, roughly 4% of them trucks, projected to reach 23,170 by 2033. The structure is 125 ft (38.1 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSH 46 (lp 337) EB
CrossesRock ST
Location2.6 MI NW of IH 35
RouteState Highway 46
CountyComal County
StateTexas
Coordinates29.72949, -98.11841
Functional classUrban Other Principal 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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating28 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadH 20
Structure length125 ft (38.1 m)
Longest span55 ft (16.8 m)
Deck width42 ft (12.9 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,852 (2018)
Projected traffic23,170 by 2033
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 46 (lp 337) EB over Rock ST built?

It was built in 1967, making it 58 years old in 2025.

What condition is SH 46 (lp 337) EB over Rock ST 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 June 2024.

How much traffic does SH 46 (lp 337) EB over Rock ST carry?

About 18,852 vehicles per day (2018 count), of which roughly 4% are trucks.

How long is SH 46 (lp 337) EB over Rock ST?

The structure is 125 ft (38.1 m) long with a longest span of 55 ft (16.8 m) and a deck 42 ft wide.

Who owns SH 46 (lp 337) EB over Rock ST?

It is owned by the State Highway Agency.