US Bridges

SH 21 over Big Loco Creek

Good

Nacogdoches County, Texas · 6.60 MI W of US 59 · Structure no. 111740011806022

Built
1935
90 years old, rebuilt 1993
Condition
Good
inspected March 2024
Type
Tee Beam
Concrete
Length
314 ft
11 main spans
Daily traffic
3,554
2024 count
Owner
State
State Highway Agency

About this bridge

SH 21 over Big Loco Creek is a concrete tee beam carrying SH 21 over Big Loco Creek in Nacogdoches County, Texas. It was built in 1935 and reconstructed in 1993, so it is 90 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 3,554 vehicles a day, roughly 16% of them trucks, projected to reach 4,479 by 2040. The structure is 314 ft (95.7 m) long and 46 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesSH 21
CrossesBig Loco Creek
Location6.60 MI W of US 59
RouteState Highway 21
StateTexas
Coordinates31.65354, -94.78637
Functional classRural 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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating34.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans11
Design loadH 15
Structure length314 ft (95.7 m)
Longest span28 ft (8.5 m)
Deck width46 ft (14 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,554 (2024)
Projected traffic4,479 by 2040
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 SH 21 over Big Loco Creek built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1993.

What condition is SH 21 over Big Loco Creek 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 March 2024.

How much traffic does SH 21 over Big Loco Creek carry?

About 3,554 vehicles per day (2024 count), of which roughly 16% are trucks.

How long is SH 21 over Big Loco Creek?

The structure is 314 ft (95.7 m) long with a longest span of 28 ft (8.5 m) and a deck 46 ft wide.

Who owns SH 21 over Big Loco Creek?

It is owned by the State Highway Agency.