US Bridges

IH 35 Nbfr over Draw

Good

Frio County, Texas · 0.10 MI S of FM 1581 · Structure no. 150830001707255

Built
1973
52 years old, rebuilt 2011
Condition
Good
inspected July 2024
Type
Slab
Concrete
Length
125 ft
5 main spans
Daily traffic
240
2013 count
Owner
State
State Highway Agency

About this bridge

IH 35 Nbfr over Draw is a concrete slab carrying IH 35 Nbfr over Draw in Frio County, Texas. It was built in 1973 and reconstructed in 2011, so it is 52 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 240 vehicles a day, roughly 10% of them trucks, projected to reach 330 by 2033. The structure is 125 ft (38.1 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIH 35 Nbfr
CrossesDraw
Location0.10 MI S of FM 1581
RouteInterstate 35
StateTexas
Coordinates28.8799, -99.11423
Functional classUrban Collector

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length125 ft (38.1 m)
Longest span25 ft (7.6 m)
Deck width38 ft (11.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic240 (2013)
Projected traffic330 by 2033
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was IH 35 Nbfr over Draw built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 2011.

What condition is IH 35 Nbfr over Draw 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 IH 35 Nbfr over Draw carry?

About 240 vehicles per day (2013 count), of which roughly 10% are trucks.

How long is IH 35 Nbfr over Draw?

The structure is 125 ft (38.1 m) long with a longest span of 25 ft (7.6 m) and a deck 38 ft wide.

Who owns IH 35 Nbfr over Draw?

It is owned by the State Highway Agency.